iankelling.org Git - distro-setup/blob - mail-setup

   1 #!/bin/bash
   2 # * intro
   3 # Copyright (C) 2019 Ian Kelling
   4 # SPDX-License-Identifier: AGPL-3.0-or-later
   5
   6 # todo: sandbox / harden exim:
   7 #  1. stop it from running as root. how?
   8 #  https://www.exim.org/exim-html-current/doc/html/spec_html/ch-security_considerations.html
   9 #  * avoid using .forward files, remove that router
  10 #  * set deliver_drop_privilege
  11 #  * set user to run as Debian-exim in systemd
  12 #  * set port to something like 2500, and forward 25 to 2500 with iptables. same for 587.
  13 #  https://superuser.com/questions/710253/allow-non-root-process-to-bind-to-port-80-and-443/1334552#1334552
  14 #  * consider whether other routers like postmaster need modification / removal.
  15 #  2. restrict its filesystem access from within systemd
  16
  17 #  todo: harden dovecot. need to do some research. one way is for it to only listen on a wireguard vpn interface, so only clients that are on the vpn can access it.
  18 #  todo: consider hardening cups listening on 0.0.0.0
  19 #  todo: stop/disable local apache, and rpc.mountd, and kdeconnect when not in use.
  20 #  todo: check that spamd and unbound only listen locally.
  21
  22 # todo:  hosts should only allow external mail that is authed and
  23 # destined for backup route. it is a minor issue since traffic is
  24 # limited to the wghole network.
  25
  26 # todo: emailing info@amnimal.ninja produces a bounce, user doesn't exist
  27 # instead of a simple rejection like it should.
  28
  29 # todo: auto restart of je on checkrestart
  30
  31 # todo: run mailping test after running, or otherwise
  32 # clear out terminal alert
  33
  34 # todo: reinstall bk with bigger filesystem
  35
  36 # todo: on bk, dont send email if mailvpn is not up
  37
  38 # todo: mailtest-check should check on bk too
  39
  40 # todo: disable postgrey
  41
  42 # todo: in testforward-check, we should also look
  43
  44 # todo: test that bounces dont help create valid mailtest-check
  45
  46 # todo: move mail stuff in distro-end into this file
  47
  48 # todo: consider rotating dkim & publishing key so every past email I sent
  49 # isnt necessarily signed
  50
  51 # todo: consider how to get clamav out of Debian-exim group
  52 # so it cant read/write the whole mail spool, for better
  53 # security.
  54
  55 # todo: create a cronjob to update or warn on expiring dnssec keys
  56
  57 # todo: we should test failed mail daily or so
  58 # failed cronjob, failed sysd-log-once,
  59 # a local bounce from a cronjob, a local bounce
  60 # to a bad remote address, perhaps a local failure
  61 # when the sending daemon is down.
  62 # And send an alert email if no alerts have been sent
  63 # in 2 or 3 days or something. todo, test cron mail on li.
  64
  65 # todo: look at mailinabox extra dns records, note these changelogs:
  66 # - An MTA-STS policy for incoming mail is now published (in DNS and over HTTPS) when the primary hostname and email address domain both have a signed TLS certificate installed, allowing senders to know that an encrypted connection should be enforced.
  67 # - The per-IP connection limit to the IMAP server has been doubled to allow more devices to connect at once, especially with multiple users behind a NAT.
  68 #
  69
  70 # todo: mailtest-check failure on remote hosts is not going to alert me.
  71 # sort that out.
  72 # todo: test mail failure as well as success.
  73 #
  74 # todo: validate that mailtest-check is doing dnsbl checks.
  75
  76 # background: I want to run exim in a network namespace so it can send
  77 # and receive through a vpn. This is needed so it can do ipv6, because
  78 # outside the namespace if we dont have ipv6, to send ipv6 through the
  79 # vpn, we have to send all our ipv6 through the vpn. I did this for a
  80 # long time, it was fine, but it causes various pains, like increased
  81 # latency, increased recaptcha because my ip is from a data center, just
  82 # various issues I dont want on all the time. The problem with the
  83 # namespace is that all kinds of programs want to invoke exim, but they
  84 # wont be in the namespace. I could replace exim with a wrapper that
  85 # jumps into the namespace, i tried that, it works fine.  One remaining
  86 # problem was that I would have needed to hook into exim upgrades to
  87 # move exim and replace it with my wrapper script. Also, my script to
  88 # join the namespace is not super reliable because it uses a pgrep.
  89 # Instead, I should have created a systemd service for a process that
  90 # will never die and just writes its pid somewhere convenient.
  91 # That implementation
  92 # is below here:
  93 #
  94 # sudoers:
  95 # user ALL=(ALL) /usr/sbin/exim4
  96 #
  97 # move exim4 to eximian, use this script for exim4:
  98 #
  99 # #!/bin/bash
 100 # if ip a show veth1-mail &>/dev/null; then
 101 #   /usr/sbin/eximian "$@"
 102 #   exit
 103 # fi
 104 # dosudo=false
 105 # if [[ $USER && $USER != root ]]; then
 106 #   dosudo=true
 107 # fi
 108 # pid=$(pgrep -f "/usr/sbin/openvpn .* --config /etc/openvpn/.*mail.conf")
 109 # if $dosudo; then
 110 #   sudo nsenter -t $pid -n -m sudo -u $USER /usr/sbin/eximian "$@"
 111 # else
 112 #   nsenter -t $pid -n -m /usr/sbin/eximian "$@"
 113 # fi
 114 # ## end script
 115 #
 116 # an alternate solution: there is a small setguid program for
 117 # network namespaces in my bookmarks.
 118 #
 119 # However, the solution I went with is: have 2 exim
 120 # configs. A nonstandard location for the daemon that runs
 121 # in the namespace. For all other invocations, it uses
 122 # the default config location, which is altered to be
 123 # in a smarthost config which sends mail to the deaemon.
 124 #
 125 # I have a bash function, enn to invoke exim like the daemon is running.
 126 # and mailbash to just enter its network namespace.
 127
 128 if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
 129
 130 shopt -s nullglob
 131
 132 if [[ -s /usr/local/lib/err ]]; then
 133   source /usr/local/lib/err
 134 elif [[ -s /a/bin/errhandle/err ]]; then
 135   source /a/bin/errhandle/err
 136 else
 137   err "no err tracing script found"
 138 fi
 139 source /a/bin/distro-functions/src/identify-distros
 140 source /a/bin/distro-functions/src/package-manager-abstractions
 141
 142 # has nextcloud_admin_pass in it
 143 f=/p/c/machine_specific/$HOSTNAME/mail
 144 if [[ -e $f ]]; then
 145   # shellcheck source=/p/c/machine_specific/bk/mail
 146   source $f
 147 fi
 148
 149
 150 [[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
 151
 152
 153 u=$(id -nu 1000)
 154
 155
 156 usage() {
 157   cat <<EOF
 158 Usage: ${0##*/} anything_here_to_debug
 159 Setup exim4 & dovecot & related things
 160
 161 -h|--help  Print help and exit.
 162 EOF
 163   exit $1
 164 }
 165
 166 # debug output if we pass any arg
 167 if (( $# )); then
 168   set -x
 169 fi
 170
 171
 172 ####### instructions for icedove #####
 173 # Incoming mail server: mail.iankelling.org, port 143, username iank, connection security starttls, authentication method normal password,
 174 # then click advanced so it accepts it.
 175 # we could also just use 127.0.0.1 with no ssl
 176 #
 177 # hamburger -> preferences -> preferences -> advanced tab -> config editor button -> security.ssl.enable_ocsp_must_staple = false
 178 # background: dovecot does not yet have ocsp stapling support
 179 # reference: https://community.letsencrypt.org/t/simple-guide-using-lets-encrypt-ssl-certs-with-dovecot/2921
 180 #
 181 # for phone, k9mail, same thing but username alerts, pass in ivy-pass.
 182 # also, bk.b8.nz for secondary alerts, username is iank. same alerts pass.
 183 # fetching mail settings: folder poll frequency 10 minutes
 184 #######
 185
 186
 187 # * perstent password instructions
 188 # Note: for cert cron, we need to manually run first to accept known_hosts
 189
 190 # # exim passwords:
 191 # # for hosts which have all private files I just use the same user
 192 # # for other hosts, each one get\'s their own password.
 193 # # for generating secure pass, and storing for server too:
 194 # f=$(mktemp)
 195 # host=tp
 196 # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
 197 # s sed -i "/^$host:/d" /p/c/filesystem/etc/exim4/passwd
 198 # echo "$host:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
 199 # #reference: exim4_passwd_client(5)
 200 # dir=/p/c/machine_specific/$host/filesystem/etc/exim4
 201 # mkdir -p $dir
 202 # echo "mail.iankelling.org:$host:$(<$f)" > $dir/passwd.client
 203 # # then run this script
 204
 205 # # dovecot password, i just need 1 as I\'m the only user
 206 # mkdir /p/c/filesystem/etc/dovecot
 207 # echo "iank:$(doveadm pw -s SHA512-CRYPT)::::::" >>/p/c/filesystem/etc/dovecot/users
 208
 209 ####### end perstent password instructions ######
 210
 211
 212 # * dkim dns
 213 # # Remove 1 level of comments in this section, set the domain var
 214 # # for the domain you are setting up, then run this and copy dns settings
 215 # # into dns.
 216 # domain=iankelling.org
 217 # c /p/c/filesystem/etc/exim4
 218 # # this has several bugs addressed in comments, but it was helpful
 219 # # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
 220
 221 # openssl genrsa -out $domain-private.pem 2048
 222 # # Then, to get the public key strings to put in bind:
 223
 224 # # selector is needed for having multiple keys for one domain.
 225 # # I dun do that, so just use a static one: li
 226 # # Debadmin page does not have v=, fastmail does, and this
 227 # # says it\'s recommended in 3.6.1, default is DKIM1 anyways.
 228 # # https://www.ietf.org/rfc/rfc6376.txt
 229 # # Join and print all but first and last line.
 230 # # last line: swap hold & pattern, remove newlines, print.
 231 # # lines 2+: append to hold space
 232 # echo "bind txt record: remember to truncate $domain so its relative to the bind zone"
 233 # cat <<EOF
 234 # a._domainkey.$domain  TXT     (
 235 # "v=DKIM1\059 k=rsa\059 p=$(openssl rsa -in $domain-private.pem -pubout |&sed -rn '${x;s/\n//g;s/^(.*)(.{240}$)/\1"\n"\2/p};3,$H')" )
 236 # EOF
 237 # # sed explanation: skip the first few lines, then put them into the hold space, then
 238 # # on the last line, back to the patern space, remove the newlines, then add a newline
 239 # # at the last char - 240, because bind txt records need strings <=255 chars,
 240 # # other dkim stuff at the begining is is 25 chars, and the pubkey is 393, so this
 241 # # leaves us a bit of extra room at the end and a bunch at the beginning.
 242
 243 # # selector was also put into /etc/exim4/conf.d/main/000_local,
 244
 245 # * dmarc dns
 246
 247 # # 2017-02 dmarc policies:
 248 # # host -t txt _dmarc.gmail.com
 249 # # yahoo: p=reject, hotmail: p=none, gmail: p=none, fastmail none for legacy reasons
 250 # # there were articles claiming gmail would be  changing
 251 # # to p=reject, in early 2017, which didn\'t happen. I see no sources on them. It\'s
 252 # # expected to cause problems
 253 # # with a few old mailing lists, copying theirs for now.
 254 #
 255 # echo "dmarc dns, name: _dmarc value: v=DMARC1; p=none; rua=mailto:mailauth-reports@$domain"
 256
 257 # * other dns
 258
 259 # # 2017-02 spf policies:
 260 # # host -t txt lists.fedoraproject.org
 261 # # google ~all, hotmail ~all, yahoo: ?all, fastmail ?all, outlook ~all
 262 # # i include fastmail\'s settings, per their instructions,
 263 # # and follow their policy. In mail in a box, or similar instructions,
 264 # # I\'ve seen recommended to not use a restrictive policy.
 265
 266 # # to check if dns has updated, you do
 267 # host -a mesmtp._domainkey.$domain
 268
 269 # # mx records,
 270 # # setting it to iankelling.org would work the same, but this
 271 # # is more flexible, I could change where mail.iankelling.org pointed.
 272 # cat <<'EOF'
 273 # mx records, 2 records each, for * and empty domain
 274 # pri 10 mail.iankelling.org
 275 # EOF
 276
 277 # # dnssec
 278 # from brc2, run dnsecgen then dsign, update named.local.conf, publish keys to registrar
 279
 280 # * functions & constants
 281
 282 pre="${0##*/}:"
 283 m() { printf "$pre %s\n"  "$*"; "$@"; }
 284 e() { printf "$pre %s\n"  "$*"; }
 285 err() { printf "$pre %s\n"  "$*" >&2; exit 1; }
 286
 287 reload=false
 288 # This file is so if we fail in the middle and rerun, we dont lose state
 289 if [[ -e /var/local/mail-setup-reload ]]; then
 290   reload=true
 291 fi
 292 i() { # install file
 293   local tmp tmpdir dest="$1"
 294   local base="${dest##*/}"
 295   mkdir -p ${dest%/*}
 296   ir=false # i result
 297   tmpdir=$(mktemp -d)
 298   cat >$tmpdir/"$base"
 299   tmp=$(rsync -ic $tmpdir/"$base" "$dest")
 300   if [[ $tmp ]]; then
 301     printf "%s\n" "$tmp"
 302     ir=true
 303     if [[ $dest == /etc/systemd/system/* ]]; then
 304       touch /var/local/mail-setup-reload
 305       reload=true
 306     fi
 307   fi
 308   rm -rf $tmpdir
 309 }
 310 setini() {
 311   key="$1" value="$2" section="$3"
 312   file="/etc/radicale/config"
 313   sed -ri "/ *\[$section\]/,/^ *\[[^]]+\]/{/^\s*${key}[[:space:]=]/d};/ *\[$section\]/a $key = $value" "$file"
 314 }
 315 soff () {
 316   for service; do
 317     # ignore services that dont exist
 318     if systemctl cat $service &>/dev/null; then
 319       m systemctl disable --now $service
 320     fi
 321   done
 322 }
 323 sre() {
 324   for service; do
 325     m systemctl restart $service
 326     m systemctl enable $service;
 327   done
 328 }
 329 mailhost() {
 330   [[ $HOSTNAME == "$MAIL_HOST" ]]
 331 }
 332 e() { printf "%s\n" "$*"; }
 333 reifactive() {
 334   for service; do
 335     if systemctl is-active $service >/dev/null; then
 336       m systemctl restart $service
 337     fi
 338   done
 339 }
 340 stopifactive() {
 341   for service; do
 342     if systemctl is-active $service >/dev/null; then
 343       m systemctl stop $service
 344     fi
 345   done
 346 }
 347
 348 mxhost=mx.iankelling.org
 349 mxport=587
 350 forward=$u@$mxhost
 351
 352 # old setup. left as comment for example
 353 # mxhost=mail.messagingengine.com
 354 # mxport=587
 355 # forward=ian@iankelling.org
 356
 357 smarthost="$mxhost::$mxport"
 358 uhome=$(eval echo ~$u)
 359
 360 # Somehow on one machine, a file got written with 664 perms.
 361 # just being defensive here.
 362 umask 0022
 363
 364 source /a/bin/bash_unpublished/source-state
 365 if [[ ! $MAIL_HOST ]]; then
 366   err "\$MAIL_HOST not set"
 367 fi
 368
 369 bhost_t=false
 370 case $HOSTNAME in
 371   $MAIL_HOST) : ;;
 372   kd|frodo|x2|x3|kw|sy|bo)
 373     bhost_t=true
 374     ;;
 375 esac
 376
 377
 378 # * Install universal packages
 379
 380
 381 # installs epanicclean
 382 /a/bin/ds/install-my-scripts
 383
 384 if [[ $(debian-codename-compat) == bionic ]]; then
 385   cat >/etc/apt/preferences.d/spamassassin <<'EOF'
 386 Package: spamassassin sa-compile spamc
 387 Pin: release n=focal,o=Ubuntu
 388 Pin-Priority: 500
 389 EOF
 390 fi
 391
 392 # light version of exim does not have sasl auth support.
 393 pi-nostart exim4 exim4-daemon-heavy spamassassin openvpn unbound clamav-daemon wireguard
 394
 395 # note: pyzor debian readme says you need to run some initialization command
 396 # but its outdated.
 397 pi spf-tools-perl p0f postgrey pyzor razor jq moreutils certbot
 398 # bad packages that sometimes get automatically installed
 399 pu openresolv resolvconf
 400
 401 soff openvpn
 402
 403
 404 if [[ $(debian-codename) == etiona ]]; then
 405   # ip6tables stopped loading on boot. openvpn has reduced capability set,
 406   # so running iptables as part of openvpn startup wont work. This should do it.
 407   pi iptables-persistent
 408   cat >/etc/iptables/rules.v6 <<'EOF'
 409 *mangle
 410 COMMIT
 411 *nat
 412 COMMIT
 413 EOF
 414   # load it now.
 415   m ip6tables -S >/dev/null
 416 fi
 417
 418 # our nostart pi fails to avoid enabling
 419
 420
 421 # * Mail clean cronjob
 422
 423 i /etc/systemd/system/mailclean.timer <<'EOF'
 424 [Unit]
 425 Description=Run mailclean daily
 426
 427 [Timer]
 428 OnCalendar=monthly
 429
 430 [Install]
 431 WantedBy=timers.target
 432 EOF
 433
 434 i /etc/systemd/system/mailclean.service <<EOF
 435 [Unit]
 436 Description=Delete and archive old mail files
 437 After=multi-user.target
 438
 439 [Service]
 440 User=$u
 441 Type=oneshot
 442 ExecStart=/usr/local/bin/sysd-mail-once mailclean /a/bin/distro-setup/mailclean
 443 EOF
 444
 445 # * postgrey
 446
 447
 448 i /etc/default/postgrey <<'EOF'
 449 POSTGREY_OPTS="--exim --unix=/var/run/postgrey/postgrey.sock --retry-window=4 --max-age=60"
 450 EOF
 451
 452 # * clamav
 453
 454 m usermod -a -G Debian-exim clamav
 455
 456 i /etc/systemd/system/clamav-daemon.service.d/fix.conf <<EOF
 457 [Service]
 458 ExecStartPre=-/bin/mkdir /var/run/clamav
 459 ExecStartPre=/bin/chown clamav /var/run/clamav
 460 EOF
 461
 462 # * mail vpn config
 463
 464 # old.
 465 #vpnser=mailvpn.service
 466 # todo: this hangs if it cant resolv the endpoint. we
 467 # want it to just retry in the background.
 468 vpnser=wg-quick@wgmail.service
 469
 470 case $HOSTNAME in
 471   $MAIL_HOST)
 472     rsync -aiSAX --chown=root:root --chmod=g-s /p/c/filesystem/etc/wireguard/ /etc/wireguard
 473     bindpaths="/etc/127.0.0.1-resolv:/run/systemd/resolve /etc/basic-nsswitch:/etc/resolved-nsswitch:norbind"
 474     ;;&
 475   bk)
 476     bindpaths="/etc/10.173.8.1-resolv:/etc/127.0.0.1-resolv"
 477     ;;&
 478   *)
 479     d=/p/c/machine_specific/$HOSTNAME/filesystem/etc/wireguard/
 480     if [[ -d $d ]]; then
 481       rsync -aiSAX --chown=root:root --chmod=g-s $d  /etc/wireguard
 482     fi
 483     ;;
 484 esac
 485
 486 i /etc/systemd/system/wg-quick@wgmail.service.d/override.conf <<EOF
 487 [Unit]
 488 Requires=mailnn.service
 489 After=network.target mailnn.service
 490 JoinsNamespaceOf=mailnn.service
 491 BindsTo=mailnn.service
 492
 493 [Service]
 494 PrivateNetwork=true
 495 # i dont think we need any of these, but it doesnt hurt to stay consistent
 496 BindPaths=$bindpaths
 497 EOF
 498
 499 # https://selivan.github.io/2017/12/30/systemd-serice-always-restart.html
 500 i /etc/systemd/system/mailvpn.service <<EOF
 501 [Unit]
 502 Description=OpenVPN tunnel for mail
 503 After=syslog.target network-online.target mailnn.service
 504 Wants=network-online.target
 505 Documentation=man:openvpn(8)
 506 Documentation=https://community.openvpn.net/openvpn/wiki/Openvpn24ManPage
 507 Documentation=https://community.openvpn.net/openvpn/wiki/HOWTO
 508 # needed to continually restatr
 509 JoinsNamespaceOf=mailnn.service
 510 BindsTo=mailnn.service
 511 StartLimitIntervalSec=0
 512
 513 [Service]
 514 Type=notify
 515 RuntimeDirectory=openvpn-client
 516 RuntimeDirectoryMode=0710
 517 WorkingDirectory=/etc/openvpn/client
 518 ExecStart=/usr/sbin/openvpn --suppress-timestamps --nobind --config /etc/openvpn/client/mail.conf
 519 #CapabilityBoundingSet=CAP_IPC_LOCK CAP_NET_ADMIN CAP_NET_RAW CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_DAC_OVERRIDE
 520 LimitNPROC=10
 521 # DeviceAllow=/dev/null rw
 522 # DeviceAllow=/dev/net/tun rw
 523 PrivateNetwork=true
 524 # in the network namespace, we cant connect to systemd-resolved on 127.0.0.53,
 525 # because of
 526 # https://unix.stackexchange.com/questions/445782/how-to-allow-systemd-resolved-to-listen-to-an-interface-other-than-loopback
 527 # there is a workaround there, but i dont think its really worth it,
 528 # the mail server is fine with a static dns anyways.
 529 # This thread is also interesting,
 530 # https://github.com/slingamn/namespaced-openvpn/issues/7
 531 # todo: the iptables rule at the bottom could be useful to prevent
 532 # dns from leaking in my network namespaced vpn.
 533 # I also like the idea of patching systemd-resolved so it
 534 # will listen on other interfaces, but its not worth my time.
 535 BindPaths=$bindpaths
 536 Restart=always
 537 # time to sleep before restarting a service
 538 RestartSec=1
 539
 540 [Install]
 541 WantedBy=multi-user.target
 542 EOF
 543
 544 i /etc/systemd/system/mailnnroute.service <<'EOF'
 545 [Unit]
 546 Description=Network routing for mailnn
 547 After=syslog.target network-online.target mailnn.service
 548 Wants=network-online.target
 549 JoinsNamespaceOf=mailnn.service
 550 BindsTo=mailnn.service
 551 StartLimitIntervalSec=0
 552
 553 [Service]
 554 Type=simple
 555 RemainAfterExit=true
 556 PrivateNetwork=true
 557 ExecStart=/usr/bin/flock -w 20 /tmp/newns.flock /a/bin/newns/newns -n 10.173.8 start mail
 558 ExecStop=/usr/bin/flock -w 20 /tmp/newns.flock /a/bin/newns/newns stop mail
 559 Restart=always
 560 RestartSec=10
 561
 562
 563 [Install]
 564 WantedBy=multi-user.target
 565 EOF
 566
 567 #
 568 i /etc/systemd/system/mailnn.service <<'EOF'
 569 [Unit]
 570 Description=Network Namespace for mail vpn service that will live forever and cant fail
 571 After=syslog.target network-online.target
 572 Wants=network-online.target
 573
 574 [Service]
 575 Type=simple
 576 PrivateNetwork=true
 577 ExecStart=/bin/sleep infinity
 578
 579 [Install]
 580 WantedBy=multi-user.target
 581 EOF
 582
 583 i /etc/systemd/system/mailbindwatchdog.service <<EOF
 584 [Unit]
 585 Description=Watchdog to restart services relying on systemd-resolved dir
 586 After=syslog.target network-online.target
 587 Wants=network-online.target
 588 BindsTo=mailnn.service
 589
 590 [Service]
 591 Type=simple
 592 ExecStart=/usr/local/bin/mailbindwatchdog $vpnser ${nn_progs[@]} unbound.service radicale.service
 593 Restart=always
 594 # time to sleep before restarting a service
 595 RestartSec=1
 596
 597 [Install]
 598 WantedBy=multi-user.target
 599 EOF
 600
 601
 602
 603 # old service name
 604 rm -fv /etc/systemd/system/openvpn-client-mail@.service
 605
 606 # We use a local unbound because systemd-resolved wont accept our
 607 # request, it will only listen to 127.0.0.53 in the main network
 608 # namespace, and rejected feature requests to change that (although I
 609 # could change the code and recompile), but anyways, that could answer
 610 # with things specific to the lan that aren't applicable in this
 611 # namespace, and since unbound is a recursive resolver, it means we just
 612 # use our own ip against dnsbl rate limits.
 613 #
 614 # If we ever notice this change, chattr +i on it
 615 # trust-ad is used in t10+, glibc 2.31
 616
 617 i /etc/127.0.0.1-resolv/stub-resolv.conf <<'EOF'
 618 nameserver 127.0.0.1
 619 options edns0 trust-ad
 620 EOF
 621
 622 i /etc/127.0.0.53-resolv/stub-resolv.conf <<'EOF'
 623 nameserver 127.0.0.53
 624 options edns0 trust-ad
 625 EOF
 626
 627
 628 i /etc/10.173.8.1-resolv/stub-resolv.conf <<'EOF'
 629 nameserver 10.173.8.1
 630 options edns0 trust-ad
 631 EOF
 632
 633 # this is just a bug fix for trisquel.
 634 f=/etc/apparmor.d/usr.sbin.unbound
 635 line="/usr/sbin/unbound flags=(attach_disconnected) {"
 636 if ! grep -qFx "$line" $f; then
 637   badline="/usr/sbin/unbound {"
 638   if ! grep -qFx "$badline" $f; then
 639     err expected line in $f not found
 640   fi
 641   sed -i "s,^$badline$,$line," $f
 642   if systemctl is-active apparmor &>/dev/null; then
 643     m systemctl reload apparmor
 644   fi
 645 fi
 646
 647 # note: anything added to nn_progs needs corresponding rm
 648 # down below in the host switch
 649 nn_progs=(exim4)
 650 if mailhost; then
 651   # Note dovecots lmtp doesnt need to be in the same nn to accept delivery.
 652   # Its in the nn so remote clients can connect to it.
 653   nn_progs+=(spamassassin dovecot)
 654 fi
 655
 656 case $HOSTNAME in
 657   $MAIL_HOST)
 658     i /etc/systemd/system/unbound.service.d/nn.conf <<EOF
 659 [Unit]
 660 After=mailnn.service
 661 JoinsNamespaceOf=mailnn.service
 662 BindsTo=mailnn.service
 663 StartLimitIntervalSec=0
 664
 665 [Service]
 666 PrivateNetwork=true
 667 # note the nsswitch bind is actually not needed for bk, but
 668 # its the same file so it does no harm.
 669 BindPaths=$bindpaths
 670
 671 Restart=always
 672 RestartSec=1
 673 EOF
 674
 675     # sooo, there are a few ways to get traffic from the mail network
 676     # namespace to go over the wghole.
 677     #
 678     #1: unify the mail vpn and wghole
 679     # into 1 network.  this seems simple and logical, so I'm doing it.
 680     # One general downside is tying things together, if I need to mess
 681     # with one thing, it breaks the other. Oh well for now.
 682     #
 683     # 2. We can route 10.5.3.0/24 out of the mail nn and nat it into wghole.
 684     #
 685     # 3. We can setup the routing to happen on li, which seemed like I
 686     # just needed to add 10.8.0.4/24 to AllowedIPs in at least the
 687     # wghole clients, but I think that is kind of hacky and breaks ipv4
 688     # routing within the mailvpn, it happened to work just because exim
 689     # prefers ipv6 and that was also available in the mailvpn.
 690     #
 691     # 4. Put the hole interface into the mail network namespace. This
 692     # doesn't work if the mail vpn is wg.  For openvpn, it bypasses the
 693     # vpn routing and establishes a direct connection.  I only use the
 694     # hole vpn for randomish things, it should be fine to join the mail
 695     # nn for that. There should be some way to fix the routing issue
 696     # by doing manual routing, but that doesn't seem like a good use of time.
 697     # relevant:
 698     # https://www.wireguard.com/netns/#
 699     #
 700     # for wireguard debugging
 701     # echo module wireguard +p > /sys/kernel/debug/dynamic_debug/control
 702     # dmesg -w
 703
 704     ;;&
 705   $MAIL_HOST|bk)
 706     for unit in ${nn_progs[@]}; do
 707       i /etc/systemd/system/$unit.service.d/nn.conf <<EOF
 708 [Unit]
 709 # commented for old openvpn
 710 Requires=$vpnser
 711 After=network.target mailnn.service $vpnser
 712 JoinsNamespaceOf=mailnn.service
 713 BindsTo=mailnn.service
 714 StartLimitIntervalSec=0
 715
 716 [Service]
 717 PrivateNetwork=true
 718 # note the nsswitch bind is actually not needed for bk, but
 719 # its the same file so it does no harm.
 720 BindPaths=$bindpaths
 721
 722 Restart=always
 723 RestartSec=1
 724 EOF
 725     done
 726     ;;
 727   *)
 728     for unit in exim4 spamassassin dovecot unbound; do
 729       f=/etc/systemd/system/$unit.service.d/nn.conf
 730       if [[ -s $f ]]; then
 731         rm -fv $f
 732         reload=true
 733       fi
 734     done
 735     ;;
 736 esac
 737
 738 # * spamassassin config
 739 i /etc/sysctl.d/80-iank-mail.conf <<'EOF'
 740 # see exim spec
 741 net.netfilter.nf_conntrack_tcp_timeout_close_wait = 120
 742 EOF
 743 if $ir; then
 744   m sysctl -p
 745 fi
 746
 747 i /etc/spamassassin/mylocal.cf <<'EOF'
 748 # this is mylocal.cf because the normal local.cf has a bunch of upstream stuff i dont want to mess with
 749
 750 # /usr/share/doc/exim4-base/README.Debian.gz:
 751 #   SpamAssassin's default report should not be used in a add_header
 752 #   statement since it contains empty lines. (This triggers e.g. Amavis'
 753 #   warning "BAD HEADER SECTION, Improper folded header field made up
 754 #   entirely of whitespace".) This is a safe, terse alternative:
 755 clear_report_template
 756 report (_SCORE_ / _REQD_ requ) _TESTSSCORES(,)_ autolearn=_AUTOLEARN
 757 uridnsbl_skip_domain iankelling.org
 758 uridnsbl_skip_domain amnimal.ninja
 759 uridnsbl_skip_domain expertpathologyreview.com
 760 uridnsbl_skip_domain zroe.org
 761 EOF
 762
 763 # 2020-10-19 remove old file. remove this when all hosts updated
 764 rm -fv /etc/systemd/system/spamddnsfix.{timer,service}
 765
 766 i /etc/default/spamassassin <<'EOF'
 767 # defaults plus debugging flags for an issue im having
 768 OPTIONS="--create-prefs --max-children 5 --helper-home-dir"
 769 PIDFILE="/var/run/spamd.pid"
 770 # my additions
 771 NICE="--nicelevel 15"
 772 CRON=1
 773 EOF
 774 #####   end spamassassin config
 775
 776
 777 # * Update mail cert
 778 if [[ -e /p/c/filesystem ]]; then
 779   # note, man openvpn implies we could just call mail-route on vpn startup/shutdown with
 780   # systemd, buuut it can remake the tun device unexpectedly, i got this in the log
 781   # after my internet was down for a bit:
 782   # NOTE: Pulled options changed on restart, will need to close and reopen TUN/TAP device.
 783   m /a/exe/vpn-mk-client-cert -b mailclient -n mail li.iankelling.org
 784 fi
 785 case $HOSTNAME in
 786   bk)
 787     if [[ ! -e /etc/openvpn/client/mail.conf ]]; then
 788       echo "$0: error: first, on a system with /p/c/filesystem, run mail-setup, or the vpn-mk-client-cert line above this err" 2>&2
 789       exit 1
 790     fi
 791     ;;
 792 esac
 793
 794 m rsync -aiSAX --chown=root:root --chmod=g-s /a/bin/ds/mail-cert-cron /usr/local/bin
 795
 796 i /etc/systemd/system/mailcert.service <<'EOF'
 797 [Unit]
 798 Description=Mail cert rsync
 799 After=multi-user.target
 800
 801 [Service]
 802 Type=oneshot
 803 ExecStart=/usr/local/bin/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
 804 EOF
 805 i /etc/systemd/system/mailcert.timer <<'EOF'
 806 [Unit]
 807 Description=Run mail-cert once a day
 808
 809 [Timer]
 810 OnCalendar=daily
 811
 812 [Install]
 813 WantedBy=timers.target
 814 EOF
 815
 816
 817 wghost=${HOSTNAME}wg.b8.nz
 818 if $bhost_t && [[ ! -e /etc/exim4/certs/$wghost/privkey.pem ]]; then
 819   certbot -n --manual-public-ip-logging-ok --eff-email --agree-tos -m letsencrypt@iankelling.org \
 820           certonly --manual --preferred-challenges=dns \
 821           --manual-auth-hook /a/bin/ds/le-dns-challenge \
 822           --manual-cleanup-hook /a/bin/ds/le-dns-challenge-cleanup \
 823           --deploy-hook /a/bin/ds/le-exim-deploy -d $wghost
 824 fi
 825
 826 # * common exim4 config
 827
 828
 829 ## old, not using forward files anymore
 830 rm -fv $uhome/.forward /root/.forward
 831
 832
 833 # Make all system users be aliases. preventative
 834 # prevents things like cron mail for user without alias
 835 awk 'BEGIN { FS = ":" } ; $6 !~ /^\/home/ || $7 ~ /\/nologin$/  { print $1 }' /etc/passwd| while read -r user; do
 836   if [[ ! $user ]]; then
 837     continue
 838   fi
 839   if ! grep -q "^$user:" /etc/aliases; then
 840     echo "$user: root" |m tee -a /etc/aliases
 841   fi
 842 done
 843
 844
 845 awk 'BEGIN { FS = ":" } ; $6 ~ /^\/home/ && $7 !~ /\/nologin$/ { print $1 }' /etc/passwd| while read -r user; do
 846   case $HOSTNAME in
 847     $MAIL_HOST)
 848       sed -i "/^user:/d" /etc/aliases
 849     ;;
 850     *)
 851       if ! grep -q "^$user:" /etc/aliases; then
 852         echo "$user: root" |m tee -a /etc/aliases
 853       fi
 854       ;;
 855   esac
 856 done
 857
 858 if ! grep -q "^ncsoft:" /etc/aliases; then
 859   echo "ncsoft: graceq2323@gmail.com" |m tee -a /etc/aliases
 860 fi
 861
 862
 863
 864 m gpasswd -a iank adm #needed for reading logs
 865
 866 ### make local bounces go to normal maildir
 867 # local mail that bounces goes to /Maildir or /root/Maildir
 868 dirs=(/m/md/bounces/{cur,tmp,new})
 869 m mkdir -p ${dirs[@]}
 870 m chown iank:iank /m /m/md
 871 m ln -sfT /m/md /m/iank
 872 m chmod 771 /m /m/md
 873 m chown -R $u:Debian-exim /m/md/bounces
 874 m chmod 775 ${dirs[@]}
 875 m usermod -a -G Debian-exim $u
 876 for d in /Maildir /root/Maildir; do
 877   if [[ ! -L $d ]]; then
 878     m rm -rf $d
 879   fi
 880   m ln -sf -T /m/md/bounces $d
 881 done
 882
 883 # dkim, client passwd file
 884 files=(/p/c/machine_specific/$HOSTNAME/filesystem/etc/exim4/*)
 885 f=/p/c/filesystem/etc/exim4/passwd.client
 886 if [[ -e $f ]]; then
 887   files+=($f)
 888 fi
 889 if (( ${#files[@]} )); then
 890   m rsync -ahhi --chown=root:Debian-exim --chmod=0640 \
 891     ${files[@]} /etc/exim4
 892 fi
 893
 894 # by default, only 10 days of logs are kept. increase that.
 895 m sed -ri 's/^(\s*rotate\s).*/\11000/' /etc/logrotate.d/exim4-base
 896
 897
 898 ## https://blog.dhampir.no/content/make-exim4-on-debian-respect-forward-and-etcaliases-when-using-a-smarthost
 899 # i only need .forwards, so just doing that one.
 900 cd /etc/exim4/conf.d/router
 901 b=userforward_higher_priority
 902 # replace the router name so it is unique
 903 sed -r s/^\\S+:/$b:/ 600_exim4-config_userforward >175_$b
 904
 905 # todo, consider 'separate' in etc/exim4.conf, could it help on busy systems?
 906
 907 # alerts is basically the postmaster address
 908 m sed -i --follow-symlinks -f - /etc/aliases <<EOF
 909 \$a root: alerts@iankelling.org
 910 /^root:/d
 911 EOF
 912
 913 cat >/etc/exim4/conf.d/rewrite/34_iank_rewriting <<'EOF'
 914 ncsoft@zroe.org graceq2323@gmail.com hE
 915 EOF
 916
 917 # old name
 918 rm -fv /etc/exim4/conf.d/retry/37_retry
 919
 920 cat >/etc/exim4/conf.d/retry/17_retry <<'EOF'
 921 # Retry fast for my own domains
 922 iankelling.org * F,1d,10m;F,14d,1h
 923 amnimal.ninja * F,1d,10m;F,14d,1h
 924 expertpathologyreview.com * F,1d,10m;F,14d,1h
 925 je.b8.nz * F,1d,10m;F,14d,1h
 926 zroe.org * F,1d,10m;F,14d,1h
 927 eximbackup.b8.nz * F,1d,4m;F,14d,1h
 928 EOF
 929
 930
 931 rm -vf /etc/exim4/conf.d/main/000_localmacros # old filename
 932 cat >/etc/exim4/conf.d/main/000_local <<EOF
 933 MAIN_TLS_ENABLE = true
 934
 935 # require tls connections for all smarthosts
 936 REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS = *
 937
 938 # debian exim config added this in 2016 or so?
 939 # it's part of the smtp spec, to limit lines to 998 chars
 940 # but a fair amount of legit mail does not adhere to it. I don't think
 941 # this should be default, like it says in
 942 # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=828801
 943 # todo: the bug for introducing this was about headers, but
 944 # the fix maybe is for all lines? one says gmail rejects, the
 945 # other says gmail does not reject. figure out and open a new bug.
 946 IGNORE_SMTP_LINE_LENGTH_LIMIT = true
 947
 948 # more verbose logs
 949 MAIN_LOG_SELECTOR = +all
 950
 951 # Based on spec, seems like a good idea to be nice.
 952 smtp_return_error_details = true
 953
 954 # normally empty, I set this so I can set the envelope address
 955 # when doing mail redelivery to invoke filters. Also allows
 956 # me exiqgrep and stuff.
 957 MAIN_TRUSTED_GROUPS = $u
 958
 959 # default is 10. when exim has been down for a bit, fsf mailserver
 960 # will do a big send in one connection, then exim decides to put
 961 # the messages in the queue instead of delivering them, to avoid
 962 # spawning too many delivery processes. This is the same as the
 963 # fsfs value. And the corresponding one for how many messages
 964 # to send out in 1 connection remote_max_parallel = 256
 965 smtp_accept_queue_per_connection = 500
 966
 967
 968 DKIM_CANON = relaxed
 969 DKIM_SELECTOR = li
 970
 971 # from comments in
 972 # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
 973 # and its best for this to align https://tools.ietf.org/html/rfc7489#page-8
 974 # There could be some circumstance when the
 975 # from: isnt our domain, but the envelope sender is
 976 # and so still want to sign, but I cant think of any case.
 977 DKIM_DOMAIN = \${lc:\${domain:\$rh_from:}}
 978 # The file is based on the outgoing domain-name in the from-header.
 979 # sign if key exists
 980 DKIM_PRIVATE_KEY = \${if exists{/etc/exim4/\${dkim_domain}-private.pem} {/etc/exim4/\${dkim_domain}-private.pem}}
 981
 982 # most of the ones that gmail seems to use.
 983 # Exim has horrible default of signing unincluded
 984 # list- headers since they got mentioned in an
 985 # rfc, but this messes up mailing lists, like gnu/debian which want to
 986 # keep your dkim signature intact but add list- headers.
 987 DKIM_SIGN_HEADERS = mime-version:in-reply-to:references:from:date:subject:to
 988
 989 domainlist local_hostnames = ! je.b8.nz : ! bk.b8.nz : *.b8.nz : b8.nz
 990
 991 hostlist iank_trusted = <; \\
 992 # veth0
 993 10.173.8.1 ; \\
 994 # li li_ip6
 995 72.14.176.105 ; 2600:3c00::f03c:91ff:fe6d:baf8 ; \\
 996 # li_vpn_net li_vpn_net_ip6s
 997 10.8.0.0/24; 2600:3c00:e000:280::/64 ; 2600:3c00:e002:3800::/56 ;  \\
 998 # bk bk_ip6
 999 85.119.83.50 ; 2001:ba8:1f1:f0c9::2 ; \\
1000 # je je_ipv6
1001 85.119.82.128 ; 2001:ba8:1f1:f09d::2 ; \\
1002 # fsf_mit_net fsf_mit_net_ip6 fsf_net fsf_net_ip6 fsf_office_net
1003 18.4.89.0/24 ; 2603:3005:71a:2e00::/64 ; 209.51.188.0/24 ; 2001:470:142::/48 ; 74.94.156.208/28
1004 EOF
1005
1006 rm -fv /etc/exim4/rcpt_local_acl # old path
1007
1008 i /etc/exim4/conf.d/local_deny_exceptions_acl <<'EOF'
1009 # This acl already exists in rcpt, this just makes it more widespread.
1010 # See the comment there for its rationale. The reason it needs to be
1011 # more widespread is that I've turned on sender verification, but cron
1012 # emails can fail sender verification since I may be in a network that
1013 # doesn't have my local dns.
1014 accept
1015   authenticated = *
1016
1017 # i setup a local programs smtp to mail.iankelling.org, this
1018 # skips sender verification for it.
1019 accept
1020   hosts = 10.173.8.1
1021 EOF
1022
1023 rm -fv /etc/exim4/data_local_acl # old path
1024 i /etc/exim4/conf.d/data_local_acl <<'EOF'
1025 # Except for the "condition =", this was
1026 # a comment in the check_data acl. The comment about this not
1027 # being suitable has been changed in newer exim versions. The only thing
1028 # related I found was to
1029 # add the condition =, cuz spamassassin has problems with big
1030 # messages and spammers don't bother with big messages,
1031 # but I've increased the size from 10k
1032 # suggested in official docs, and 100k in the wiki example because
1033 # those docs are rather old and I see a 110k spam message
1034 # pretty quickly looking through my spam folder.
1035
1036 warn
1037   !hosts = +iank_trusted
1038   remove_header = X-Spam_score: X-Spam_score_int : X-Spam_bar : X-Spam_report
1039
1040 warn
1041   !hosts = +iank_trusted
1042   condition = ${if < {$message_size}{5000K}}
1043   spam = Debian-exim:true
1044   add_header = X-Spam_score_int: $spam_score_int
1045   add_header = X-Spam_score: $spam_score
1046   add_header = X-Spam_bar: $spam_bar
1047   add_header = X-Spam_report: $spam_report
1048   add_header = X-Spam_action: $spam_action
1049
1050 warn
1051   condition = ${if def:malware_name}
1052   remove_header = Subject:
1053   add_header = Subject: [Clamav warning: $malware_name] $h_subject
1054   log_message = heuristic malware warning: $malware_name
1055
1056 #accept
1057 #  spf = pass:fail:softfail:none:neutral:permerror:temperror
1058 #  dmarc_status = reject:quarantine
1059 #  add_header = Reply-to: dmarctest@iankelling.org
1060
1061 EOF
1062
1063 i /etc/exim4/conf.d/router/900_exim4-config_local_user <<EOF
1064 ### router/900_exim4-config_local_user
1065 #################################
1066
1067 # This router matches local user mailboxes. If the router fails, the error
1068 # message is "Unknown user".
1069 local_user:
1070   debug_print = "R: local_user for \$local_part@\$domain"
1071   driver = accept
1072   domains = +local_domains
1073 # ian: default file except where mentioned.
1074 # ian: commented this. I get all local parts. for bk, an rcpt
1075 # check handles checking with dovecot, and the only router
1076 # after this is root.
1077 #  local_parts = ! root
1078   transport = LOCAL_DELIVERY
1079   cannot_route_message = Unknown user
1080 # ian: added for + addressing.
1081   local_part_suffix = +*
1082   local_part_suffix_optional
1083 EOF
1084 i /etc/exim4/conf.d/transport/30_exim4-config_dovecot_lmtp <<'EOF'
1085 dovecot_lmtp:
1086   driver = lmtp
1087   socket = /var/run/dovecot/lmtp
1088   #maximum number of deliveries per batch, default 1
1089   batch_max = 200
1090   envelope_to_add
1091 EOF
1092
1093 i /etc/exim4/conf.d/transport/30_remote_smtp_vpn <<'EOF'
1094 # same as debians 30_exim4-config_remote_smtp, but
1095 # with interface added at the end.
1096
1097 remote_smtp_vpn:
1098   debug_print = "T: remote_smtp_vpn for $local_part@$domain"
1099   driver = smtp
1100 .ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT
1101   message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
1102 .endif
1103 .ifdef REMOTE_SMTP_HOSTS_AVOID_TLS
1104   hosts_avoid_tls = REMOTE_SMTP_HOSTS_AVOID_TLS
1105 .endif
1106 .ifdef REMOTE_SMTP_HEADERS_REWRITE
1107   headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE
1108 .endif
1109 .ifdef REMOTE_SMTP_RETURN_PATH
1110   return_path = REMOTE_SMTP_RETURN_PATH
1111 .endif
1112 .ifdef REMOTE_SMTP_HELO_DATA
1113   helo_data=REMOTE_SMTP_HELO_DATA
1114 .endif
1115 .ifdef DKIM_DOMAIN
1116 dkim_domain = DKIM_DOMAIN
1117 .endif
1118 .ifdef DKIM_SELECTOR
1119 dkim_selector = DKIM_SELECTOR
1120 .endif
1121 .ifdef DKIM_PRIVATE_KEY
1122 dkim_private_key = DKIM_PRIVATE_KEY
1123 .endif
1124 .ifdef DKIM_CANON
1125 dkim_canon = DKIM_CANON
1126 .endif
1127 .ifdef DKIM_STRICT
1128 dkim_strict = DKIM_STRICT
1129 .endif
1130 .ifdef DKIM_SIGN_HEADERS
1131 dkim_sign_headers = DKIM_SIGN_HEADERS
1132 .endif
1133 .ifdef TLS_DH_MIN_BITS
1134 tls_dh_min_bits = TLS_DH_MIN_BITS
1135 .endif
1136 .ifdef REMOTE_SMTP_TLS_CERTIFICATE
1137 tls_certificate = REMOTE_SMTP_TLS_CERTIFICATE
1138 .endif
1139 .ifdef REMOTE_SMTP_PRIVATEKEY
1140 tls_privatekey = REMOTE_SMTP_PRIVATEKEY
1141 .endif
1142 .ifdef REMOTE_SMTP_HOSTS_REQUIRE_TLS
1143   hosts_require_tls = REMOTE_SMTP_HOSTS_REQUIRE_TLS
1144 .endif
1145 .ifdef REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
1146   headers_remove = REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
1147 .endif
1148   interface = <; 10.8.0.4 ; 2600:3c00:e002:3800::4
1149 EOF
1150
1151 i /etc/exim4/conf.d/transport/30_smarthost_dkim <<'EOF'
1152 # ian: this is remote_smtp_smarthost plus the dkim parts from remote_smtp
1153
1154 smarthost_dkim:
1155   debug_print = "T: remote_smtp_smarthost for $local_part@$domain"
1156   driver = smtp
1157   multi_domain
1158 .ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT
1159   message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
1160 .endif
1161   hosts_try_auth = <; ${if exists{CONFDIR/passwd.client} \
1162         {\
1163         ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$host_address}}\
1164         }\
1165         {} \
1166       }
1167 .ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
1168   hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
1169 .endif
1170 .ifdef REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
1171   hosts_require_tls = REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
1172 .endif
1173 .ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
1174   tls_verify_certificates = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
1175 .endif
1176 .ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS
1177   tls_verify_hosts = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOST
1178 .endif
1179 .ifdef REMOTE_SMTP_HEADERS_REWRITE
1180   headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE
1181 .endif
1182 .ifdef REMOTE_SMTP_RETURN_PATH
1183   return_path = REMOTE_SMTP_RETURN_PATH
1184 .endif
1185 .ifdef REMOTE_SMTP_HELO_DATA
1186   helo_data=REMOTE_SMTP_HELO_DATA
1187 .endif
1188 .ifdef TLS_DH_MIN_BITS
1189 tls_dh_min_bits = TLS_DH_MIN_BITS
1190 .endif
1191 .ifdef REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
1192 tls_certificate = REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
1193 .endif
1194 .ifdef REMOTE_SMTP_SMARTHOST_PRIVATEKEY
1195 tls_privatekey = REMOTE_SMTP_SMARTHOST_PRIVATEKEY
1196 .endif
1197 .ifdef REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
1198   headers_remove = REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
1199 .endif
1200 .ifdef DKIM_DOMAIN
1201 dkim_domain = DKIM_DOMAIN
1202 .endif
1203 .ifdef DKIM_SELECTOR
1204 dkim_selector = DKIM_SELECTOR
1205 .endif
1206 .ifdef DKIM_PRIVATE_KEY
1207 dkim_private_key = DKIM_PRIVATE_KEY
1208 .endif
1209 .ifdef DKIM_CANON
1210 dkim_canon = DKIM_CANON
1211 .endif
1212 .ifdef DKIM_STRICT
1213 dkim_strict = DKIM_STRICT
1214 .endif
1215 .ifdef DKIM_SIGN_HEADERS
1216 dkim_sign_headers = DKIM_SIGN_HEADERS
1217 .endif
1218 EOF
1219
1220
1221 cat >/etc/exim4/update-exim4.conf.conf  <<'EOF'
1222 # default stuff, i havent checked if its needed
1223 dc_minimaldns='false'
1224 dc_relay_nets=''
1225 CFILEMODE='644'
1226 dc_use_split_config='true'
1227 dc_mailname_in_oh='true'
1228 EOF
1229
1230
1231 # * radicale
1232 if mailhost; then
1233   if ! mountpoint /o; then
1234     echo "error /o is not a mountpoint" >&2
1235     exit 1
1236   fi
1237
1238   # davx/davdroid setup instructions at the bottom
1239
1240   # main docs:
1241   # http://radicale.org/user_documentation/
1242   # https://davdroid.bitfire.at/configuration/
1243
1244   # note on debugging: if radicale can't bind to the address,
1245   # in the log it just says "Starting Radicale". If you run
1246   # it in the foreground, it will give more info. Background
1247   # plus debug does not help.
1248   # sudo -u radicale radicale -D -f
1249
1250   # created password file with:
1251   # htpasswd -c /p/c/machine_specific/li/filesystem/etc/caldav-htpasswd
1252   # chmod 640 /p/c/machine_specific/li/filesystem/etc/caldav-htpasswd
1253   # # setup chgrp www-data in ./conflink
1254
1255   pi-nostart radicale
1256
1257   i /etc/systemd/system/radicale.service.d/override.conf <<EOF
1258 [Unit]
1259 # this unit is configured to start and stop whenever
1260 # $vpnser does
1261
1262 After=network.target network-online.target mailnn.service $vpnser
1263 BindsTo=$vpnser
1264
1265 Wants=network-online.target
1266 JoinsNamespaceOf=mailnn.service
1267 StartLimitIntervalSec=0
1268
1269 [Service]
1270 PrivateNetwork=true
1271 BindPaths=$bindpaths
1272 Restart=always
1273 # time to sleep before restarting a service
1274 RestartSec=1000
1275
1276 [Install]
1277 # for openvpn
1278 RequiredBy=$vpnser
1279 EOF
1280
1281
1282   # use persistent uid/gid
1283   IFS=:; read -r _ _ uid _ < <(getent passwd radicale ); unset IFS
1284   IFS=:; read -r _ _ gid _ < <(getent group radicale ); unset IFS
1285   if [[ $uid != 609 ]]; then
1286     m systemctl stop radicale ||:
1287     m usermod -u 609 radicale
1288     m groupmod -g 609 radicale
1289     m usermod -g 609 radicale
1290   fi
1291   m find /o/radicale  -xdev -exec chown -h 609 {} +
1292   m find /o/radicale -xdev -exec chgrp -h 609 {} +
1293
1294
1295   # I moved /var/lib/radicale after it's initialization.
1296   # I did a sudo -u radicale git init in the collections subfolder
1297   # after it gets created, per the git docs.
1298   m /a/exe/lnf -T /o/radicale /var/lib/radicale
1299
1300   # from https://www.williamjbowman.com/blog/2015/07/24/setting-up-webdav-caldav-and-carddav-servers/
1301
1302   # more config is for li in distro-end
1303
1304   # coment in this file says this is needed for it to run on startup
1305   sed -ri 's/^\s*#+\s*(ENABLE_RADICALE\s*=\s*yes\s*)/\1/' /etc/default/radicale
1306
1307   # comments say default is 0.0.0.0:5232
1308   m setini hosts 10.8.0.4:5232 server
1309   # https://radicale.org/2.1.html
1310   m setini type http_x_remote_user auth
1311
1312
1313   # disable power management feature, set to 240 min sync interval,
1314   # so it shouldn't be bad.
1315
1316   # davdroid from f-druid.
1317   # login with url and user name
1318   # url https://cal.iankelling.org/ian
1319   # username ian
1320   # pass, see password manager for radicale
1321   #
1322   # add account dialog:
1323   #
1324   # set account name as ian@iankelling.org, per help text below the
1325   # field.
1326   #
1327   # switch to groups are per-contact categories,
1328   # per https://davdroid.bitfire.at/configuration/radicale/
1329   #
1330   #
1331   # After setting up account, I added one address book, named
1332   # ianaddr. calender was already created, named ian. checked boxes under
1333   # both. synced.
1334   #
1335   # To restore from old phone to new phone, I wiped all data out, then copied over the newly created files. I think
1336   #
1337   # ignorable background info:
1338   #
1339   # opentasks uses the calendar file.
1340   #
1341   # The address book I created got a uuid as a name for the file. Note
1342   # the .props file says if it's a calendar or addressbook.
1343   #
1344   # When debugging, tailed /var/log/radicale/radicale.log and apache log,
1345   # both show the requests happening. Without creating the address book,
1346   # after creating a contact, a sync would delete it.
1347   #
1348   # Address books correspond to .props files in the radicale dir.
1349   #
1350   #  Some background is here,
1351   # https://davdroid.bitfire.at/faq/entry/cant-manage-groups-on-device/
1352   # which shows separate vcard option is from rfc 6350, the other is 2426,
1353   # radicale page says it implements the former not the latter,
1354   # which conflicts with the documentation of which to select, but whatever.
1355   # http://radicale.org/technical_choices/
1356   # https://davdroid.bitfire.at/faq/entry/cant-manage-groups-on-device/
1357   #
1358   # Note, url above says only cayanogenmod 13+ and omnirom can manage groups.
1359
1360   # Note, radicale had built-in git support to track changes, but they
1361   # removed it in 2.0.
1362
1363 fi
1364
1365 # * dovecot
1366
1367 # ** $MAIL_HOST|bk|je)
1368 case $HOSTNAME in
1369   $MAIL_HOST|bk|je)
1370     # based on a little google and package search, just the dovecot
1371     # packages we need instead of dovecot-common.
1372     #
1373     # dovecot-lmtpd is for exim to deliver to dovecot instead of maildir
1374     # directly.  The reason to do this is to use dovecot\'s sieve, which
1375     # can generally do more than exims filters (a few things less) and
1376     # sieve has the benefit of being supported in postfix and
1377     # proprietary/weird environments, so there is more examples on the
1378     # internet.
1379     pi dovecot-core dovecot-imapd dovecot-sieve dovecot-lmtpd dovecot-sqlite sqlite3
1380
1381     for f in /p/c{/machine_specific/$HOSTNAME,}/filesystem/etc/dovecot/users; do
1382       if [[ -e $f ]]; then
1383         m rsync -ahhi --chown=root:dovecot --chmod=0640 $f /etc/dovecot/
1384         break
1385       fi
1386     done
1387     for f in /p/c/subdir_files/sieve/*sieve /a/c/subdir_files/sieve/*sieve; do
1388       m sudo -u $u /a/exe/lnf -T $f $uhome/sieve/${f##*/}
1389     done
1390
1391     # https://wiki.dovecot.org/SSL/DovecotConfiguration
1392     i /etc/dovecot/dhparam <<'EOF'
1393 -----BEGIN DH PARAMETERS-----
1394 MIIBCAKCAQEAoleil6SBxGqQKk7j0y2vV3Oklv6XupZKn7PkPv485QuFeFagifeS
1395 A+Jz6Wquqk5zhGyCu63Hp4wzGs4TyQqoLjkaWL6Ra/Bw3g3ofPEzMGEsV1Qdqde4
1396 jorwiwtr2i9E6TXQp0noT/7VFeHulIkayTeW8JulINdMHs+oLylv16McGCIrxbkM
1397 8D1PuO0TP/CNDs2QbRvJ1RjY3CeGpxMhrSHVgBCUMwnA2cvz3bYjI7UMYMMDPNrE
1398 PLrwsYzXGGCdJsO2vsmmqqgLsZiapYJlUNjfiyWLt7E2H6WzkNB3VIhIPfLqFDPK
1399 xioE3sYKdjOt+p6mlg3l8+OLtODEFPHDqwIBAg==
1400 -----END DH PARAMETERS-----
1401 EOF
1402     {
1403       if [[ $HOSTNAME == "$MAIL_HOST" ]]; then
1404         cat <<'EOF'
1405 ssl_cert = </etc/exim4/fullchain.pem
1406 ssl_key = </etc/exim4/privkey.pem
1407 EOF
1408       else
1409         cat <<'EOF'
1410 ssl_cert = </etc/exim4/exim.crt
1411 ssl_key = </etc/exim4/exim.key
1412 EOF
1413       fi
1414       cat <<EOF
1415 # https://ssl-config.mozilla.org
1416 ssl = required
1417 # this is the same as the certbot list, in my cert cronjob, I check if that has changed upstream.
1418 ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
1419 ssl_protocols = TLSv1.2
1420 ssl_prefer_server_ciphers = no
1421
1422 protocol lmtp {
1423 #per https://wiki2.dovecot.org/Pigeonhole/Sieve/Configuration
1424 # default is just \$mail_plugins
1425   mail_plugins = \$mail_plugins sieve
1426 }
1427 EOF
1428       if dpkg --compare-versions $(dpkg-query -f='${Version}\n' --show dovecot-core) ge 1:2.3; then
1429         cat <<EOF
1430 ssl_dh = </etc/dovecot/dhparam
1431 EOF
1432       fi
1433     } >/etc/dovecot/local.conf
1434
1435     ;;&
1436
1437   # **  $MAIL_HOST)
1438   $MAIL_HOST)
1439     # If we changed 90-sieve.conf and removed the active part of the
1440     # sieve option, we wouldn\'t need this, but I\'d rather not modify a
1441     # default config if not needed. This won\'t work as a symlink in /a/c
1442     # unfortunately.
1443     m sudo -u $u /a/exe/lnf -T sieve/main.sieve $uhome/.dovecot.sieve
1444
1445     if [[ ! -e $uhome/sieve/personal.sieve ]]; then
1446       m touch $uhome/sieve/personal{,end}{,test}.sieve
1447     fi
1448
1449     rm -fv /etc/dovecot/conf.d/20-lmtp.conf # file from prev version
1450     cat >>/etc/dovecot/local.conf <<EOF
1451 # simple password file based login
1452 !include conf.d/auth-passwdfile.conf.ext
1453
1454 # ian: %u is used for alerts user vs iank
1455 mail_location = maildir:/m/%u:LAYOUT=fs:INBOX=/m/%u/INBOX
1456 mail_uid = $u
1457 mail_gid = $u
1458
1459 protocol lmtp {
1460 # For a normal setup with exim, we need something like this, which
1461 # removes the domain part
1462 #  auth_username_format = %Ln
1463 #
1464 #  or else # Exim says something like
1465 #  "LMTP error after RCPT ... 550 ... User doesn't exist someuser@somedomain"
1466 # Dovecot verbose log says something like
1467 # "auth-worker(9048): passwd(someuser@somedomain): unknown user"
1468 # reference: http://wiki.dovecot.org/LMTP/Exim
1469 #
1470 # However, I use this to direct all mail to the same inbox.
1471 # A normal way to do this, which I did at first is to have
1472 # a router in exim almost at the end, eg 950,
1473 #local_catchall:
1474 #  debug_print = "R: catchall for \$local_part@\$domain"
1475 #  driver = redirect
1476 #  domains = +local_domains
1477 #  data = $u
1478 # based on
1479 # http://blog.alteholz.eu/2015/04/exim4-and-catchall-email-address/
1480 # with superflous options removed.
1481 # However, this causes the envelope to be rewritten,
1482 # which makes filtering into mailboxes a little less robust or more complicated,
1483 # so I've done it this way instead. it also requires
1484 # modifying the local router in exim.
1485   auth_username_format = $u
1486 }
1487 EOF
1488     ;;&
1489   # **  bk|je)
1490   bk|je)
1491     chown -R mail.mail /m/md
1492
1493     f=/etc/dovecot/conf.d/10-auth.conf
1494     if [[ -e $f ]]; then
1495       mv $f $f-iank-disabled
1496     fi
1497
1498     cat >>/etc/dovecot/local.conf <<EOF
1499 !include /etc/dovecot/local.conf.ext
1500
1501 # for debugging info, uncomment these.
1502 # logs go to syslog and to /var/log/mail.log
1503 #auth_verbose=yes
1504 #mail_debug=yes
1505
1506
1507 protocol lmtp {
1508 # This downcases the localpart. default is case sensitive.
1509 # case sensitive local part will miss out on valid email when some person or system
1510 # mistakenly capitalizes things.
1511   auth_username_format = %Lu
1512 }
1513
1514 # make 147 only listen on localhost, plan to use for nextcloud.
1515 # copied from mailinabox
1516 service imap-login {
1517   inet_listener imap {
1518     address = 127.0.0.1
1519   }
1520 }
1521 # https://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_dovecot_authenticator.html
1522 service auth {
1523   unix_listener auth-client {
1524     user = Debian-exim
1525     group = Debian-exim
1526   }
1527 }
1528
1529
1530 plugin {
1531   sieve_before = /etc/dovecot/sieve-spam.sieve
1532   # from mailinabox
1533   sieve = /m/sieve/%d/%n.sieve
1534   sieve_dir = /m/sieve/%d/%n
1535 }
1536
1537
1538 # all taken from mailinabox.
1539 mail_location = maildir:/m/md/%d/%n
1540 # meh, ok.
1541 mail_privileged_group = mail
1542 # By default Dovecot allows users to log in only with UID numbers 500 and above. mail is 8
1543 first_valid_uid = 1
1544
1545 # todo: test these changes in the universal config
1546 # mailboxes taken from mailinabox but removed
1547 # settings duplicate to defaults
1548 namespace inbox {
1549   mailbox INBOX {
1550     auto = subscribe
1551   }
1552   mailbox Spam {
1553     special_use = \Junk
1554     auto = subscribe
1555   }
1556   mailbox Drafts {
1557     auto = subscribe
1558   }
1559   mailbox Sent {
1560     auto = subscribe
1561   }
1562   mailbox Trash {
1563     auto = subscribe
1564   }
1565   mailbox Archive {
1566     special_use = \Archive
1567     auto = subscribe
1568   }
1569 }
1570 auth_mechanisms = plain login
1571 EOF
1572
1573     i /etc/dovecot/sieve-spam.sieve <<'EOF'
1574 require ["regex", "fileinto", "imap4flags"];
1575
1576 if allof (header :regex "X-Spam-Status" "^Yes") {
1577   fileinto "Spam";
1578   stop;
1579 }
1580 EOF
1581
1582     i /etc/dovecot/local.conf.ext <<'EOF'
1583 passdb {
1584   driver = sql
1585   args = /etc/dovecot/dovecot-sql.conf.ext
1586 }
1587 userdb {
1588   driver = sql
1589   args = /etc/dovecot/dovecot-sql.conf.ext
1590 }
1591
1592 EOF
1593
1594     i /etc/dovecot/dovecot-sql.conf.ext <<'EOF'
1595 # from mailinabox
1596 driver = sqlite
1597 connect = /m/rc/users.sqlite
1598 default_pass_scheme = SHA512-CRYPT
1599 password_query = SELECT email as user, password FROM users WHERE email='%u';
1600 user_query = SELECT email AS user, "mail" as uid, "mail" as gid, "/m/md/%d/%n" as home FROM users WHERE email='%u';
1601 iterate_query = SELECT email AS user FROM users;
1602 EOF
1603     m chmod 0600 /etc/dovecot/dovecot-sql.conf.ext # per Dovecot instructions
1604
1605     # db needs to be in a www-data writable directory
1606     db=/m/rc/users.sqlite
1607     if [[ ! -s $db ]]; then
1608       m mkdir -p /m/rc
1609       m sqlite3 $db <<'EOF'
1610 CREATE TABLE users (
1611 id INTEGER PRIMARY KEY AUTOINCREMENT,
1612 email TEXT NOT NULL UNIQUE,
1613 password TEXT NOT NULL,
1614 extra,
1615 privileges TEXT NOT NULL DEFAULT '');
1616 EOF
1617     fi
1618     # example of adding a user:
1619     # hash: doveadm pw -s SHA512-CRYPT -p passhere
1620     # sqlite3 /m/rc/users.sqlite <<'EOF'
1621     #insert into users (email, password) values ('testignore@bk.b8.nz', 'hash');
1622     #EOF
1623     # update users set password = 'hash' where email = 'testignore@bk.b8.nz';
1624
1625     # this should be at the end since it requires a valid dovecot config
1626     m sievec /etc/dovecot/sieve-spam.sieve
1627     ;;&
1628   # **  bk)
1629   bk)
1630     # roundcube uses this
1631     mkdir -p /m/sieve
1632     chown mail.mail /m/sieve
1633     m pi dovecot-managesieved
1634     ;;
1635 esac
1636
1637 # * thunderbird autoconfig setup
1638
1639 bkdomains=(expertpathologyreview.com amnimal.ninja)
1640 if [[ $HOSTNAME == bk ]]; then
1641   for domain in ${bkdomains[@]}; do
1642     m /a/exe/web-conf apache2 autoconfig.$domain
1643     dir=/var/www/autoconfig.$domain/html/mail
1644     m mkdir -p $dir
1645     # taken from mailinabox
1646     i $dir/config-v1.1.xml <<EOF
1647 <?xml version="1.0" encoding="UTF-8"?>
1648 <clientConfig version="1.1">
1649     <emailProvider id="$domain">
1650       <domain>$domain</domain>
1651
1652       <displayName>$domain Mail</displayName>
1653       <displayShortName>$domain</displayShortName>
1654
1655       <incomingServer type="imap">
1656          <hostname>mail2.iankelling.org</hostname>
1657          <port>993</port>
1658          <socketType>SSL</socketType>
1659          <username>%EMAILADDRESS%</username>
1660          <authentication>password-cleartext</authentication>
1661       </incomingServer>
1662
1663       <outgoingServer type="smtp">
1664          <hostname>mail2.iankelling.org</hostname>
1665          <port>587</port>
1666          <socketType>STARTTLS</socketType>
1667          <username>%EMAILADDRESS%</username>
1668          <authentication>password-cleartext</authentication>
1669          <addThisServer>true</addThisServer>
1670          <useGlobalPreferredServer>false</useGlobalPreferredServer>
1671       </outgoingServer>
1672
1673       <documentation url="https://$domain/">
1674          <descr lang="en">$domain website.</descr>
1675       </documentation>
1676     </emailProvider>
1677
1678     <webMail>
1679       <loginPage url="https://$domain/roundcube" />
1680       <loginPageInfo url="https://$domain/roundcube" >
1681         <username>%EMAILADDRESS%</username>
1682         <usernameField id="rcmloginuser" name="_user" />
1683         <passwordField id="rcmloginpwd" name="_pass" />
1684         <loginButton id="rcmloginsubmit" />
1685       </loginPageInfo>
1686     </webMail>
1687     <clientConfigUpdate url="https://autoconfig.$domain/mail/config-v1.1.xml" />
1688 </clientConfig>
1689 EOF
1690   done
1691 fi
1692
1693 # * roundcube setup
1694
1695 if [[ $HOSTNAME == bk ]]; then
1696
1697   # zip according to /installer
1698   # which requires adding a line to /usr/local/lib/roundcubemail/config/config.inc.php
1699   # $config['enable_installer'] = true;
1700   pi roundcube roundcube-sqlite3 php-zip apache2 php-fpm
1701
1702   ### begin composer install
1703   # https://getcomposer.org/doc/faqs/how-to-install-composer-programmatically.md
1704   # cd $(mktemp -d)
1705   # sum="$(wget -q -O - https://composer.github.io/installer.sig)"
1706   # m php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
1707   # if [[ $sum != $(php -r "echo hash_file('sha384', 'composer-setup.php');") ]]; then
1708   #   echo 'ERROR: Invalid composer installer checksum' >&2
1709   #   rm -fv composer-setup.php
1710   #   exit 1
1711   # fi
1712   # m php composer-setup.php --quiet
1713   # rm -fv composer-setup.php
1714   # m mv composer.phar /usr/local/bin
1715
1716   # the above method gets composer2, carddav plugin at least doesnt work with that
1717   # yet, it was just released 10-24-2020.
1718   m cd /usr/local/bin
1719   m wget -nv -N https://getcomposer.org/composer-1.phar
1720   chmod +x composer-1.phar
1721   ### end composer install
1722
1723   rcdirs=(/usr/local/lib/rcexpertpath /usr/local/lib/rcninja)
1724   ncdirs=(/var/www/ncexpertpath /var/www/ncninja)
1725   # point debian cronjob to our local install, preventing daily cron error
1726
1727   # debian's cronjob will fail, remove both paths it uses just to be sure
1728   rm -fv /usr/share/roundcube/bin/cleandb.sh /etc/cron.d/roundcube-core
1729
1730   #### begin dl roundcube
1731   # note, im r2e subbed to https://github.com/roundcube/roundcubemail/releases.atom
1732   v=1.4.13; f=roundcubemail-$v-complete.tar.gz
1733   cd /a/opt
1734   if [[ -e $f ]]; then
1735     timestamp=$(stat -c %Y $f)
1736   else
1737     timestamp=0
1738   fi
1739   m wget -nv -N https://github.com/roundcube/roundcubemail/releases/download/$v/$f
1740   new_timestamp=$(stat -c %Y $f)
1741   for rcdir in ${rcdirs[@]}; do
1742     if [[ $timestamp != "$new_timestamp" ||  ! -e "$rcdir/config/secret" ]]; then
1743       m tar -C /usr/local/lib --no-same-owner -zxf $f
1744       m rm -rf $rcdir
1745       m mv /usr/local/lib/roundcubemail-$v $rcdir
1746     fi
1747   done
1748   #### end dl roundcube
1749
1750   for ((i=0; i < ${#bkdomains[@]}; i++)); do
1751     domain=${bkdomains[i]}
1752     rcdir=${rcdirs[i]}
1753     rcbase=${rcdir##*/}
1754     ncdir=${ncdirs[i]}
1755
1756     # copied from debians cronjob
1757     i /etc/cron.d/$rcbase <<EOF
1758 #  Roundcube database cleaning: finally removes all records that are
1759 #  marked as deleted.
1760 0   5  *   *   *   www-data $rcdir/bin/cleandb.sh >/dev/null
1761 EOF
1762
1763     m /a/exe/web-conf - apache2 $domain <<EOF
1764 Alias /roundcube $rcdir
1765 ### begin roundcube settings
1766 # taken from /etc/apache2/conf-available/roundcube.conf version 1.4.8+dfsg.1-1~bpo10+1
1767 <Directory $rcdir/>
1768   Options +FollowSymLinks
1769   # This is needed to parse $rcdir/.htaccess.
1770   AllowOverride All
1771   Require all granted
1772 </Directory>
1773 # Protecting basic directories:
1774 <Directory $rcdir/config>
1775   Options -FollowSymLinks
1776   AllowOverride None
1777 </Directory>
1778 ### end roundcube settings
1779
1780
1781 ### begin nextcloud settings
1782 Alias /nextcloud "$ncdir/"
1783 <Directory $ncdir/>
1784   Require all granted
1785   AllowOverride All
1786   Options FollowSymLinks MultiViews
1787
1788   <IfModule mod_dav.c>
1789     Dav off
1790   </IfModule>
1791
1792 </Directory>
1793
1794 # based on install checker, links to
1795 # https://docs.nextcloud.com/server/19/admin_manual/issues/general_troubleshooting.html#service-discovery
1796 # their example was a bit wrong, I figured it out by adding
1797 # LogLevel warn rewrite:trace5
1798 # then watching the apache logs
1799
1800 RewriteEngine on
1801 RewriteRule ^/\.well-known/host-meta /nextcloud/public.php?service=host-meta [QSA,L]
1802 RewriteRule ^/\.well-known/host-meta\.json /nextcloud/public.php?service=host-meta-json [QSA,L]
1803 RewriteRule ^/\.well-known/webfinger /nextcloud/public.php?service=webfinger [QSA,L]
1804 RewriteRule ^/\.well-known/carddav /nextcloud/remote.php/dav/ [R=301,L]
1805 RewriteRule ^/\.well-known/caldav /nextcloud/remote.php/dav/ [R=301,L]
1806 ### end nextcloud settings
1807 EOF
1808     if [[ ! -e $rcdir/config/secret ]]; then
1809       base64 </dev/urandom | head -c24 >$rcdir/config/secret || [[ $? == 141 || ${PIPESTATUS[0]} == 32 ]]
1810     fi
1811     secret=$(cat $rcdir/config/secret)
1812
1813     rclogdir=/var/log/$rcbase
1814     rctmpdir=/var/tmp/$rcbase
1815     rcdb=/m/rc/$rcbase.sqlite
1816     # config from mailinabox
1817     i $rcdir/config/config.inc.php <<EOF
1818 <?php
1819 \$config = array();
1820 # debian creates this for us
1821 \$config['log_dir'] = '$rclogdir/';
1822 # debian also creates a temp dir, but it is under its install dir,
1823 # seems better to have our own.
1824 \$config['temp_dir'] = '$rctmpdir/';
1825 \$config['db_dsnw'] = 'sqlite:///$rcdb?mode=0640';
1826 \$config['default_host'] = 'ssl://localhost';
1827 \$config['default_port'] = 993;
1828 \$config['imap_conn_options'] = array(
1829   'ssl'         => array(
1830      'verify_peer'  => false,
1831      'verify_peer_name'  => false,
1832    ),
1833  );
1834 \$config['imap_timeout'] = 15;
1835 \$config['smtp_server'] = 'tls://127.0.0.1';
1836 \$config['smtp_conn_options'] = array(
1837   'ssl'         => array(
1838      'verify_peer'  => false,
1839      'verify_peer_name'  => false,
1840    ),
1841  );
1842 \$config['product_name'] = 'webmail';
1843 \$config['des_key'] = '$secret';
1844 \$config['plugins'] = array('archive', 'zipdownload', 'password', 'managesieve', 'jqueryui', 'carddav', 'html5_notifier');
1845 \$config['skin'] = 'elastic';
1846 \$config['login_autocomplete'] = 2;
1847 \$config['password_charset'] = 'UTF-8';
1848 \$config['junk_mbox'] = 'Spam';
1849 # disable builtin addressbook
1850 \$config['address_book_type'] = '';
1851 ?>
1852 EOF
1853
1854     m mkdir -p $rclogdir
1855     m chmod 750 $rclogdir
1856     m chown www-data:adm $rclogdir
1857     # note: subscribed to updates:
1858     # r2e add rcmcarddav https://github.com/blind-coder/rcmcarddav/commits/master.atom ian@iankelling.org
1859     # r2e add roundcube https://github.com/roundcube/roundcubemail/releases.atom ian@iankelling.org
1860     m mkdir -p $rctmpdir /m/rc
1861     m chown -R www-data.www-data $rctmpdir /m/rc
1862     m chmod 750 $rctmpdir
1863     # Ensure the log file monitored by fail2ban exists, or else fail2ban can't start.
1864     # todo: setup fail2ban
1865     # todo: check for other mailinabox things
1866     m sudo -u www-data touch $rclogdir/errors.log
1867
1868     #### begin carddav install
1869     # This is the official roundcube carddav repo.
1870     # Install doc suggests downloading with composer, but that
1871     # didnt work, it said some ldap package for roundcube was missing,
1872     # but I dont want to download some extra ldap thing.
1873     # https://github.com/blind-coder/rcmcarddav/blob/master/doc/INSTALL.md
1874     verf=$rcdir/plugins/carddav/myversion
1875     upgrade=false
1876     install=false
1877     v=4.0.0
1878     if [[ -e $verf ]]; then
1879       if [[ $(cat $verf) != "$v" ]]; then
1880         install=true
1881         upgrade=true
1882       fi
1883     else
1884       install=true
1885     fi
1886     if $install; then
1887       m rm -rf $rcdir/plugins/carddav
1888       tmpd=$(mktemp -d)
1889       m wget -nv -O $tmpd/t.tgz https://github.com/blind-coder/rcmcarddav/releases/download/v$v/carddav-v$v.tgz
1890       cd $rcdir/plugins
1891       tar xzf $tmpd/t.tgz
1892       rm -rf $tmpd
1893       m chown -R www-data:www-data $rcdir/plugins/carddav
1894       m cd $rcdir/plugins/carddav
1895       if $upgrade; then
1896         m sudo -u www-data composer-1.phar update --no-dev
1897       else
1898         m sudo -u www-data composer-1.phar install --no-dev
1899       fi
1900       m chown -R root:root $rcdir/plugins/carddav
1901       echo $v >$verf
1902     fi
1903
1904     # So, strangely, this worked in initial testing, but then
1905     # on first run it wouldn't show the existing contacts until
1906     # I went into the carddav settings and did "force immediate sync",
1907     # which seemed to fix things. Note, some of these settings
1908     # get initalized per/addressbook in the db, then need changing
1909     # there or through the settings menu.
1910
1911     # About categories, see https://www.davx5.com/tested-with/nextcloud
1912     # https://github.com/blind-coder/rcmcarddav/blob/master/doc/GROUPS.md
1913     i $rcdir/plugins/carddav/config.inc.php <<EOF;
1914 <?php
1915 \$prefs['_GLOBAL']['hide_preferences'] = false;
1916 \$prefs['davserver'] = array(
1917 # name in the UI is kind of dumb. This is just something short that seems to fit ok.
1918   'name'         =>  'Main',
1919   'username'     =>  '%u', // login username
1920   'password'     =>  '%p', // login password
1921   'url'          =>  'https://$domain/nextcloud/remote.php/dav/addressbooks/users/%u/contacts',
1922   'active'       =>  true,
1923   'readonly'     =>  false,
1924   'refresh_time' => '00:10:00',
1925   'fixed'        =>  array('username','password'),
1926   'use_categories' => false,
1927   'hide'        =>  false,
1928 );
1929 ?>
1930 EOF
1931     #### end carddav install
1932
1933     cd $rcdir/plugins
1934     if [[ ! -d html5_notifier ]]; then
1935       m git clone https://github.com/stremlau/html5_notifier
1936     fi
1937     cd $rcdir/plugins/html5_notifier
1938     m git pull --rebase
1939
1940     # todo: try out roundcube plugins: thunderbird labels
1941
1942     # Password changing plugin settings
1943     cat $rcdir/plugins/password/config.inc.php.dist - >$rcdir/plugins/password/config.inc.php <<'EOF'
1944 # following are from mailinabox
1945 $config['password_minimum_length'] = 8;
1946 $config['password_db_dsn'] = 'sqlite:////m/rc/users.sqlite';
1947 $config['password_query'] = 'UPDATE users SET password=%D WHERE email=%u';
1948 $config['password_dovecotpw'] = '/usr/bin/doveadm pw';
1949 $config['password_dovecotpw_method'] = 'SHA512-CRYPT';
1950 $config['password_dovecotpw_with_method'] = true;
1951 EOF
1952     # so PHP can use doveadm, for the password changing plugin
1953     m usermod -a -G dovecot www-data
1954     m usermod -a -G mail $u
1955
1956     # so php can update passwords
1957     m chown www-data:dovecot /m/rc/users.sqlite
1958     m chmod 664 /m/rc/users.sqlite
1959
1960     # Run Roundcube database migration script (database is created if it does not exist)
1961     m $rcdir/bin/updatedb.sh --dir $rcdir/SQL --package roundcube
1962     m chown www-data:www-data $rcdb
1963     m chmod 664 $rcdb
1964   done # end loop over domains and rcdirs
1965
1966   ### begin php setup for rc ###
1967   # Enable PHP modules.
1968   m phpenmod -v php mcrypt imap
1969   # dpkg says this is required
1970   m a2enmod proxy_fcgi setenvif
1971   fpm=$(dpkg-query -s php-fpm | sed -nr 's/^Depends:.* (php[^ ]*-fpm)( .*|$)/\1/p') # eg: php7.4-fpm
1972   phpver=$(dpkg-query -s php-fpm | sed -nr 's/^Depends:.* php([^ ]*)-fpm( .*|$)/\1/p')
1973   m a2enconf $fpm
1974   # 3 useless guides on php fpm fcgi debian 10 later, i figure out from reading
1975   # /etc/apache2/conf-enabled/php7.3-fpm.conf
1976   m a2dismod php$phpver
1977   # according to /install, we should set date.timezone,
1978   # but that is dumb, the system already has the right zone in
1979   # $rclogdir/errors.log
1980   # todo: consider other settings in
1981   # /a/opt/mailinabox/setup/nextcloud.sh
1982   i /etc/php/$phpver/cli/conf.d/30-local.ini <<'EOF'
1983 apc.enable_cli = 1
1984 EOF
1985
1986   i /etc/php/$phpver/fpm/conf.d/30-local.ini <<'EOF'
1987 date.timezone = "America/New_York"
1988 # for nextcloud
1989 upload_max_filesize = 2000M
1990 post_max_size = 2000M
1991 # install checker, nextcloud/settings/admin/overview
1992 memory_limit = 512M
1993 EOF
1994   m systemctl restart $fpm
1995   # dunno if reload/restart is needed
1996   m systemctl reload apache2
1997   # note bk backups are defined in crontab outside this file
1998   ### end php setup for rc ###
1999
2000 fi # end roundcube setup
2001
2002 # * nextcloud setup
2003
2004 if [[ $HOSTNAME == bk ]]; then
2005   # from install checker, nextcloud/settings/admin/overview and
2006   # https://docs.nextcloud.com/server/19/admin_manual/installation/source_installation.html
2007   # curl from the web installer requirement, but i switched to cli
2008   # it recommends php-file info, but that is part of php7.3-common, already got installed
2009   # with roundcube.
2010   m pi php-curl php-bz2 php-gmp php-bcmath php-imagick php-apcu
2011
2012   # https://docs.nextcloud.com/server/19/admin_manual/installation/source_installation.html
2013   cat >/etc/php/$phpver/fpm/pool.d/localwww.conf <<'EOF'
2014 [www]
2015 clear_env = no
2016 EOF
2017
2018   for ((i=0; i < ${#bkdomains[@]}; i++)); do
2019     domain=${bkdomains[i]}
2020     ncdir=${ncdirs[i]}
2021     ncbase=${ncdir##*/}
2022     m cd /var/www
2023     if [[ ! -e $ncdir/index.php ]]; then
2024       # if we wanted to only install a specific version, use something like
2025       # file=latest-22.zip
2026       file=latest.zip
2027       m wget -nv -N https://download.nextcloud.com/server/releases/$file
2028       m rm -rf nextcloud
2029       m unzip -q $file
2030       m rm -f $file
2031       m chown -R www-data.www-data nextcloud
2032       m mv nextcloud $ncdir
2033       m cd $ncdir
2034       m sudo -u www-data php occ  maintenance:install --database sqlite --admin-user iank --admin-pass $nextcloud_admin_pass
2035     fi
2036     # note, strange this happend where updater did not increment the version var,
2037     # mine was stuck on 20. I manually updated it.
2038     m cd $ncdir/config
2039     if [[ ! -e config.php-orig ]]; then
2040       m cp -a config.php config.php-orig
2041     fi
2042     cat config.php-orig - >tmp.php <<EOF
2043 # https://docs.nextcloud.com/server/19/admin_manual/configuration_server/email_configuration.html
2044 \$CONFIG["mail_smtpmode"] = "sendmail";
2045 \$CONFIG["mail_smtphost"] = "127.0.0.1";
2046 \$CONFIG["mail_smtpport"] = 25;
2047 \$CONFIG["mail_smtptimeout"] = 10;
2048 \$CONFIG["mail_smtpsecure"] = "";
2049 \$CONFIG["mail_smtpauth"] = false;
2050 \$CONFIG["mail_smtpauthtype"] = "LOGIN";
2051 \$CONFIG["mail_smtpname"] = "";
2052 \$CONFIG["mail_smtppassword"] = "";
2053 \$CONFIG["mail_domain"] = "$domain";
2054
2055 # https://github.com/nextcloud/user_external#readme
2056 # plus mailinabox example
2057 #\$CONFIG['user_backends'] = array(array('class' => 'OC_User_IMAP','arguments' => array('127.0.0.1', 143, null),),);
2058
2059
2060 # based on installer check
2061 # https://docs.nextcloud.com/server/19/admin_manual/configuration_server/caching_configuration.html
2062 \$CONFIG['memcache.local'] = '\OC\Memcache\APCu';
2063
2064 \$CONFIG['overwrite.cli.url'] = 'https://$domain/nextcloud';
2065 \$CONFIG['htaccess.RewriteBase'] = '/nextcloud';
2066 \$CONFIG['trusted_domains'] = array (
2067         0 => '$domain',
2068     );
2069 #\$CONFIG[''] = '';
2070 fwrite(STDOUT, "<?php\n\\\$CONFIG = ");
2071 var_export(\$CONFIG);
2072 fwrite(STDOUT, ";\n");
2073 EOF
2074     m php tmp.php >config.php
2075     m rm tmp.php
2076     m sudo -u www-data php $ncdir/occ maintenance:update:htaccess
2077     list=$(sudo -u www-data php $ncdir/occ --output=json_pretty app:list)
2078     # user_external not compaible with nc 23
2079     for app in contacts calendar; do
2080       if [[ $(printf "%s\n" "$list"| jq ".enabled.$app") == null ]]; then
2081         m sudo -u www-data php $ncdir/occ app:install $app
2082       fi
2083     done
2084     i /etc/systemd/system/$ncbase.service <<EOF
2085 [Unit]
2086 Description=ncup $ncbase
2087 After=multi-user.target
2088
2089 [Service]
2090 Type=oneshot
2091 ExecStart=/usr/local/bin/ncup $ncbase
2092 User=www-data
2093 IOSchedulingClass=idle
2094 CPUSchedulingPolicy=idle
2095 EOF
2096     i /etc/systemd/system/$ncbase.timer <<EOF
2097 [Unit]
2098 Description=ncup $ncbase timer
2099
2100 [Timer]
2101 OnCalendar=Daily
2102
2103 [Install]
2104 WantedBy=timers.target
2105 EOF
2106     systemctl enable --now $ncbase.timer
2107     i /usr/local/bin/ncup <<'EOFOUTER'
2108 #!/bin/bash
2109 if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
2110 shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
2111 set -eE -o pipefail
2112 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR
2113
2114 ncbase=$1
2115 if ! php /var/www/$ncbase/updater/updater.phar -n; then
2116   echo failed nextcloud update for $ncbase >&2
2117   /sbin/exim -t <<EOF
2118 To: alerts@iankelling.org
2119 From: root@$(hostname -f)
2120 Subject: failed nextcloud update for $ncbase
2121
2122 For logs, run: jr -u $ncbase
2123 EOF
2124 fi
2125 EOFOUTER
2126
2127     mkdir -p /var/www/cron-errors
2128     chown www-data.www-data /var/www/cron-errors
2129     i /etc/cron.d/$ncbase <<EOF
2130 PATH=/sbin:/usr/sbin:/usr/bin:/bin:/usr/local/bin
2131 SHELL=/bin/bash
2132 # https://docs.nextcloud.com/server/20/admin_manual/configuration_server/background_jobs_configuration.html
2133 */5  *  *  *  * www-data php -f $ncdir/cron.php --define apc.enable_cli=1 |& log-once nccron
2134 EOF
2135
2136   done
2137 fi
2138
2139
2140 # * exim host conditional config
2141
2142 # ** exim certs
2143
2144 all_dirs=(/p/c/filesystem)
2145 for x in /p/c/machine_specific/*.hosts /a/bin/ds/machine_specific/*.hosts; do
2146   if grep -qxF $HOSTNAME $x; then all_dirs+=( ${x%.hosts} ); fi
2147 done
2148 files=()
2149 for d in ${all_dirs[@]}; do
2150   f=$d/etc/exim4/passwd
2151   if [[ -e $f  ]]; then
2152     files+=($f)
2153   fi
2154   tmp=($d/etc/exim4/*.pem)
2155   if (( ${#tmp[@]} )); then
2156     files+=(${tmp[@]})
2157   fi
2158 done
2159
2160 if (( ${#files[@]} )); then
2161   sudo rsync -ahhi --chown=root:Debian-exim --chmod=0640 ${files[@]} /etc/exim4/
2162 fi
2163
2164
2165 # ** auth
2166
2167 case $HOSTNAME in
2168   bk|je)
2169     # avoid accepting mail for invalid users
2170     # https://wiki.dovecot.org/LMTP/Exim
2171     cat >>/etc/exim4/conf.d/rcpt_local_acl <<'EOF'
2172 deny
2173   message = invalid recipient
2174   domains = +local_domains
2175   !verify = recipient/callout=no_cache
2176 EOF
2177     i /etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
2178 dovecot_plain:
2179   driver = dovecot
2180   public_name = PLAIN
2181   server_socket = /var/run/dovecot/auth-client
2182   server_set_id = $auth1
2183 EOF
2184     ;;
2185 esac
2186 if $bhost_t; then
2187   i /etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
2188 # from 30_exim4-config_examples
2189 plain_server:
2190 driver = plaintext
2191 public_name = PLAIN
2192 server_condition = "${if crypteq{$auth3}{${extract{1}{:}{${lookup{$auth2}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}"
2193 server_set_id = $auth2
2194 server_prompts = :
2195 .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS
2196 server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}}
2197 .endif
2198 EOF
2199 fi
2200
2201 # ** main daemon use non-default config file
2202 case $HOSTNAME in
2203   bk|$MAIL_HOST)
2204     # to see the default comments in /etc/default/exim4:
2205     # s update-exim4defaults --force --init
2206     # which will overwrite any existing file
2207     i /etc/default/exim4 <<'EOF'
2208 QUEUERUNNER='combined'
2209 QUEUEINTERVAL='30m'
2210 COMMONOPTIONS='-C /etc/exim4/my.conf'
2211 UPEX4OPTS='-o /etc/exim4/my.conf'
2212 #E4BCD_PANICLOG_NOISE='malware acl condition: clamd /var/run/clamav/clamd\.ctl : unable to connect to UNIX socket'
2213 EOF
2214     i /etc/exim4/trusted_configs <<'EOF'
2215 /etc/exim4/my.conf
2216 EOF
2217     ;;
2218   *)
2219     # default file
2220     i /etc/default/exim4 <<'EOF'
2221 QUEUERUNNER='combined'
2222 QUEUEINTERVAL='30m'
2223 EOF
2224     ;;
2225 esac
2226
2227 case $HOSTNAME in
2228   # ** $MAIL_HOST|bk|je)
2229   $MAIL_HOST|bk|je)
2230
2231     echo|i /etc/exim4/conf.d/router/870_backup_local
2232
2233     cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2234 # note: some things we don't set that are here by default because they are unused.
2235 dc_local_interfaces=''
2236 dc_eximconfig_configtype='internet'
2237 dc_localdelivery='dovecot_lmtp'
2238 EOF
2239     cat >>/etc/exim4/conf.d/main/000_local <<EOF
2240 # recommended if dns is expected to work
2241 CHECK_RCPT_VERIFY_SENDER = true
2242 # default config comment says: If you enable this, you might reject legitimate mail,
2243 # but eggs has had this a long time, so that seems unlikely.
2244 CHECK_RCPT_SPF = true
2245 CHECK_RCPT_REVERSE_DNS = true
2246 CHECK_MAIL_HELO_ISSUED = true
2247
2248 # enable 587 in addition to the default 25, so that
2249 # i can send mail where port 25 is firewalled by isp
2250 daemon_smtp_ports = 25 : 587
2251 # default of 25, can get stuck when catching up on mail
2252 smtp_accept_max = 400
2253 smtp_accept_reserve = 100
2254 smtp_reserve_hosts = +iank_trusted
2255
2256 # options exim has to avoid having to alter the default config files
2257 CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/conf.d/rcpt_local_acl
2258 CHECK_DATA_LOCAL_ACL_FILE = /etc/exim4/conf.d/data_local_acl
2259 LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE = /etc/exim4/conf.d/local_deny_exceptions_acl
2260 # testing dmarc
2261 #dmarc_tld_file = /etc/public_suffix_list.dat
2262 EOF
2263     ;;&
2264
2265   # ** $MAIL_HOST|bk)
2266   $MAIL_HOST|bk)
2267
2268     cat >>/etc/exim4/conf.d/main/000_local <<EOF
2269 # je.b8.nz will run out of memory with freshclam
2270 av_scanner = clamd:/var/run/clamav/clamd.ctl
2271 EOF
2272
2273     cat >> /etc/exim4/conf.d/data_local_acl <<'EOF'
2274 deny
2275   malware = */defer_ok
2276   !condition = ${if match {$malware_name}{\N^Heuristic\N}}
2277   message = This message was detected as possible malware ($malware_name).
2278 EOF
2279
2280     cat >/etc/exim4/conf.d/main/000_local-nn <<EOF
2281 # MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
2282 # smarthost config type, not sure.
2283 # failing message on mail-tester.com:
2284 # We check if there is a server (A Record) behind your hostname kd.
2285 # You may want to publish a DNS record (A type) for the hostname kd or use a different hostname in your mail software
2286 # https://serverfault.com/questions/46545/how-do-i-change-exim4s-primary-hostname-on-a-debian-box
2287 # and this one seemed appropriate from grepping config.
2288 # I originally set this to li.iankelling.org, but then ended up with errors when li tried to send
2289 # mail to kd, so this should basically be a name that no host has as their
2290 # canonical hostname since the actual host sits behind a nat and changes.
2291 MAIN_HARDCODE_PRIMARY_HOSTNAME = mail.iankelling.org
2292 # I used this to avoid sender verification, didnt work but it still
2293 # makes sense based on the spec.
2294 hosts_treat_as_local = defaultnn.b8.nz
2295
2296 # Outside nn, we get the default cert location from a debian macro,
2297 # and the cert file is put in place by a certbot hook.
2298 MAIN_TLS_CERTIFICATE = /etc/exim4/fullchain.pem
2299 MAIN_TLS_PRIVATEKEY = /etc/exim4/privkey.pem
2300 EOF
2301
2302     i /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost <<'EOF'
2303 gnusmarthost:
2304   debug_print = "R: smarthost for $local_part@$domain"
2305   driver = manualroute
2306   domains = ! +local_domains
2307 # send most mail through eggs, helps fsfs sender reputation.
2308 # uncomment and optionally move to 188 file to send through my own servers again
2309   senders = *@gnu.org
2310   transport = smarthost_dkim
2311   route_list = * fencepost.gnu.org::587 byname
2312   host_find_failed = ignore
2313   same_domain_copy_routing = yes
2314   no_more
2315 EOF
2316
2317     /a/exe/cedit defaultnn /etc/hosts <<'EOF' || [[ $? == 1 ]]
2318 10.173.8.1 defaultnn.b8.nz
2319 EOF
2320     ;;&
2321   # ** $MAIL_HOST)
2322   $MAIL_HOST)
2323
2324     i /etc/exim4/conf.d/router/195_dnslookup_vpn <<'EOF'
2325 # copied from /etc/exim4/conf.d/router/200_exim4-config_primary, but
2326 # use vpn transport. lower priority so it overrides the default route.
2327 # Use this in case our vpn fails, we dont send anything without it.
2328 .ifdef DCconfig_internet
2329 dnslookup_vpn:
2330   debug_print = "R: dnslookup for $local_part@$domain"
2331   driver = dnslookup
2332   domains = ! +local_domains
2333   transport = remote_smtp_vpn
2334   same_domain_copy_routing = yes
2335   ignore_target_hosts = <; 0.0.0.0 ; 127.0.0.0/8 ; 192.168.0.0/16 ; 172.16.0.0/12 ; 10.0.0.0/8 ; 169.254.0.0/16 ; 255.255.255.255 ; ::/128 ; ::1/128 ; fc00::/7 ; fe80::/10 ; 100::/64
2336   no_more
2337 .endif
2338 EOF
2339
2340
2341     # note on backups: I used to do an automatic sshfs and restricted
2342     # permissions to a specific directory on the remote server, /bu/mnt,
2343     # which required using a dedicated user, but realized smtp will be
2344     # more reliable and less fuss. If I ever need that again, see the
2345     # history of this file, and bum in brc2.
2346
2347     i /etc/exim4/conf.d/router/890_backup_copy <<EOF
2348 ### router/900_exim4-config_local_user
2349 #################################
2350
2351 # todo, it would be nice to save sent email too,
2352 # but its not so important, they still exist in my head
2353
2354 backup_redir:
2355 driver = redirect
2356 domains = +local_domains
2357 # b is just an arbirary short string
2358 data = b@eximbackup.b8.nz
2359 # note, to test this, i could temporarily allow testignore.
2360 # alerts avoids potential mail loop. root is already
2361 # redirected earlier, so that is just being overly cautious.
2362 local_parts = ! root : ! testignore : ! alerts
2363 unseen = true
2364
2365 backup_copy:
2366 driver = manualroute
2367 domains = eximbackup.b8.nz
2368 transport = backup_remote
2369 ignore_target_hosts = ${HOSTNAME}wg.b8.nz
2370 # note changes here also require change in passwd.client
2371 route_list = * eximbackup.b8.nz
2372 same_domain_copy_routing = yes
2373 errors_to = alerts@iankelling.org
2374 no_more
2375 EOF
2376
2377
2378     i /etc/exim4/conf.d/transport/30_backup_remote <<'EOF'
2379 backup_remote:
2380   driver = smtp
2381   multi_domain
2382 .ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT
2383   message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
2384 .endif
2385   hosts_require_auth = *
2386   hosts_try_auth = *
2387   envelope_to_add
2388   # manual return path because we want it to be the envelope sender
2389   # we got not the one we are using in this smtp transport
2390   headers_add = "Return-path: $sender_address"
2391 .ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
2392   hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
2393 .endif
2394 .ifdef REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
2395   hosts_require_tls = REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
2396 .endif
2397 .ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
2398   tls_verify_certificates = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
2399 .endif
2400 .ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS
2401   tls_verify_hosts = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOST
2402 .endif
2403 .ifdef REMOTE_SMTP_HEADERS_REWRITE
2404   headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE
2405 .endif
2406 .ifdef REMOTE_SMTP_HELO_DATA
2407   helo_data=REMOTE_SMTP_HELO_DATA
2408 .endif
2409 .ifdef TLS_DH_MIN_BITS
2410 tls_dh_min_bits = TLS_DH_MIN_BITS
2411 .endif
2412 .ifdef REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
2413 tls_certificate = REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
2414 .endif
2415 .ifdef REMOTE_SMTP_SMARTHOST_PRIVATEKEY
2416 tls_privatekey = REMOTE_SMTP_SMARTHOST_PRIVATEKEY
2417 .endif
2418 .ifdef REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
2419   headers_remove = REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
2420 .endif
2421 EOF
2422
2423
2424     # this avoids some error. i cant remember what. todo:
2425     # test it out and document why/if its needed.
2426 #     i /etc/exim4/host_local_deny_exceptions <<'EOF'
2427 # mail.fsf.org
2428 # *.posteo.de
2429 # EOF
2430
2431     # cron email from smarthost hosts will automatically be to
2432     # USER@FQDN. I redirect that to alerts@, on the smarthosts, but in
2433     # case that doesn't work, we still want to accept that mail, but not
2434     # from any host except the smarthosts. local_hostnames and this rule
2435     # is for that purpose.
2436     i /etc/exim4/conf.d/rcpt_local_acl <<'EOF'
2437 deny
2438   !authenticated = *
2439   domains = +local_hostnames
2440   message = no relay
2441 EOF
2442     echo|i /etc/exim4/conf.d/router/880_universal_forward
2443
2444     # for iank@fsf.org, i have mail.fsf.org forward it to fsf@iankelling.org.
2445     # and also have mail.iankelling.org whitelisted as a relay domain.
2446     # I could avoid that if I changed this to submit to 587 with a
2447     # password like a standard mua.
2448     i /etc/exim4/conf.d/router/188_exim4-config_smarthost <<'EOF'
2449 # ian: copied from /etc/exim4/conf.d/router/200_exim4-config_primary, and added senders = and
2450 # replaced DCsmarthost with hostname
2451 fsfsmarthost:
2452   debug_print = "R: smarthost for $local_part@$domain"
2453   driver = manualroute
2454   domains = ! +local_domains
2455   senders = *@fsf.org
2456   transport = remote_smtp_smarthost
2457   route_list = * mail.fsf.org::587 byname
2458   host_find_failed = ignore
2459   same_domain_copy_routing = yes
2460   no_more
2461
2462 posteosmarthost:
2463   debug_print = "R: smarthost for $local_part@$domain"
2464   driver = manualroute
2465   domains = ! +local_domains
2466   senders = *@posteo.net
2467   transport = remote_smtp_smarthost
2468   route_list = * posteo.de::587 byname
2469   host_find_failed = ignore
2470   same_domain_copy_routing = yes
2471   no_more
2472
2473 EOF
2474
2475     # Greping /etc/exim4, unqualified mails this would end up as
2476     # a return path, so it should go somewhere we will see.
2477     # The debconf output about mailname is as follows:
2478     # The 'mail name' is the domain name used to 'qualify' mail addresses without a domain
2479     # name.
2480     # This name will also be used by other programs. It should be the single, fully
2481     # qualified domain name (FQDN).
2482     # Thus, if a mail address on the local host is foo@example.org, the correct value for
2483     # this option would be example.org.
2484     # This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
2485     echo iankelling.org > /etc/mailname
2486
2487
2488     # mail.iankelling.org so local imap clients can connect with tls and
2489     # when they happen to not be local.
2490     # todo: this should be 10.8.0.4
2491
2492     /a/exe/cedit nn /etc/hosts <<'EOF' || [[ $? == 1 ]]
2493 # note: i put nn.b8.nz into bind for good measure
2494 10.173.8.2 nn.b8.nz mx.iankelling.org
2495 EOF
2496
2497     # note: systemd-resolved will consult /etc/hosts, dnsmasq wont. this assumes
2498     # weve configured this file in dnsmasq if we are using it.
2499     /a/exe/cedit mail /etc/dnsmasq-servers.conf <<'EOF' || [[ $? == 1 ]]
2500 server=/mx.iankelling.org/127.0.1.1
2501 EOF
2502     # I used to use debconf-set-selections + dpkg-reconfigure,
2503     # which then updates this file
2504     # but the process is slower than updating it directly and then I want to set other things in
2505     # update-exim4.conf.conf, so there's no point.
2506     # The file is documented in man update-exim4.conf,
2507     # except the man page is not perfect, read the bash script to be sure about things.
2508
2509     # The debconf questions output is additional documentation that is not
2510     # easily accessible, but super long, along with the initial default comment in this
2511     # file, so I've saved that into ./mail-notes.conf.
2512     #
2513     # # TODO: remove mx.iankelling.org once systems get updated mail-setup from jan 2022
2514     cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2515 # man page: is used to build the local_domains list, together with "localhost"
2516 # this is duplicated in a later router.
2517 dc_other_hostnames='iankelling.org;zroe.org;r2e.iankelling.org;mx.iankelling.org;!je.b8.nz;!bk.b8.nz;*.b8.nz;b8.nz'
2518 EOF
2519
2520
2521     # dmarc. not used currently
2522     f=/etc/cron.daily/refresh-dmarc-tld-file
2523     cat >$f <<'EOF'
2524 #!/bin/bash
2525 cd /etc
2526 wget -q -N https://publicsuffix.org/list/public_suffix_list.dat
2527 EOF
2528     m chmod 755 $f
2529
2530     ;;
2531   # ** bk
2532   ## we use this host to monitor MAIL_HOST and host a mail server for someone
2533   bk)
2534
2535     echo|i /etc/exim4/conf.d/rcpt_local_acl
2536     echo|i /etc/exim4/conf.d/router/880_universal_forward
2537
2538     echo amnimal.ninja > /etc/mailname
2539
2540     /a/exe/cedit nn /etc/hosts <<'EOF' || [[ $? == 1 ]]
2541 10.173.8.2 nn.b8.nz
2542 EOF
2543
2544     sed -r -f - /etc/init.d/exim4  <<'EOF' | i /etc/init.d/exim4in
2545 s,/etc/default/exim4,/etc/default/exim4in,g
2546 s,/run/exim4/exim.pid,/run/exim4/eximin.pid,g
2547 s,(^[ #]*Provides:).*,\1 exim4in,
2548 s,(^[ #]*NAME=).*,\1"exim4in",
2549 EOF
2550     chmod +x /etc/init.d/exim4in
2551     i /etc/systemd/system/exim4in.service.d/alwaysrestart.conf <<'EOF'
2552 [Unit]
2553 # needed to continually restart
2554 StartLimitIntervalSec=0
2555
2556 [Service]
2557 Restart=always
2558 # time to sleep before restarting a service
2559 RestartSec=1
2560 EOF
2561
2562     i /etc/default/exim4in <<'EOF'
2563 # defaults but no queue runner and alternate config dir
2564 QUEUERUNNER='no'
2565 COMMONOPTIONS='-oP /run/exim4/eximin.pid'
2566 UPEX4OPTS='-d /etc/myexim4'
2567 EOF
2568
2569     cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2570 # man page: is used to build the local_domains list, together with "localhost"
2571 dc_other_hostnames='amnimal.ninja;expertpathologyreview.com'
2572 EOF
2573
2574     ;;
2575   # ** je
2576   je)
2577     echo je.b8.nz > /etc/mailname
2578     cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2579 dc_other_hostnames='je.b8.nz'
2580 EOF
2581     echo|i /etc/exim4/conf.d/router/188_exim4-config_smarthost
2582     echo|i /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost
2583     echo|i /etc/exim4/conf.d/rcpt_local_acl
2584     echo|i /etc/exim4/conf.d/router/880_universal_forward
2585     ;;
2586   # ** not MAIL_HOST|bk|je
2587   *)
2588     # this one should be removed for all non mail hosts, but
2589     # bk and je never become mail_host
2590     echo|i /etc/exim4/conf.d/router/195_dnslookup_vpn
2591
2592     echo|i /etc/exim4/conf.d/router/188_exim4-config_smarthost
2593     echo|i /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost
2594     echo|i /etc/exim4/conf.d/rcpt_local_acl
2595     echo|i /etc/exim4/conf.d/router/890_backup_copy
2596     echo|i /etc/exim4/conf.d/main/000_local-nn
2597
2598
2599     if $bhost_t; then
2600       cat >>/etc/exim4/conf.d/main/000_local <<EOF
2601 MAIN_TLS_CERTIFICATE = /etc/exim4/certs/$wghost/fullchain.pem
2602 MAIN_TLS_PRIVATEKEY = /etc/exim4/certs/$wghost/privkey.pem
2603 # so we can maintiain the originals of the backups.
2604 # we wouldnt want this if we were dealing with any other
2605 # local deliveries, but we sent all others to the smarthost
2606 # which then strips the headers.
2607 envelope_to_remove = false
2608 return_path_remove = false
2609 EOF
2610     fi
2611
2612     # catches things like cronjob email
2613     i /etc/exim4/conf.d/router/880_universal_forward <<'EOF'
2614 universal_forward:
2615   driver = redirect
2616   domains = +local_domains
2617   data = alerts@iankelling.org
2618 EOF
2619
2620
2621     for unit in ${nn_progs[@]}; do
2622       f=/etc/systemd/system/$unit.service.d/nn.conf
2623       rm -fv $f
2624     done
2625
2626     # dont i dont care if defaultnn section gets left, it wont
2627     # get used.
2628     echo | /a/exe/cedit nn /etc/hosts || [[ $? == 1 ]]
2629     echo | /a/exe/cedit mail /etc/dnsmasq-servers.conf || [[ $? == 1 ]]
2630
2631
2632     if $bhost_t; then
2633       install -d /bu
2634       install -d -g $u -o $u -m 771 /bu/md
2635       i /etc/exim4/conf.d/transport/30_backup_maildir <<EOF
2636 # modified debian maildir transport
2637 backup_maildir:
2638   driver = appendfile
2639   directory = /bu/md
2640   delivery_date_add
2641   # note, no return path or envelope added
2642   maildir_format
2643   directory_mode = 0700
2644   mode = 0644
2645   mode_fail_narrower = false
2646   user = $u
2647 EOF
2648
2649       i /etc/exim4/conf.d/router/870_backup_local <<EOF
2650 ### router/900_exim4-config_local_user
2651 #################################
2652
2653 backup_local:
2654   debug_print = "R: local_user for \$local_part@\$domain"
2655   driver = accept
2656   domains = eximbackup.b8.nz
2657   transport = backup_maildir
2658 EOF
2659
2660       # Bind to wghole to receive mailbackup.
2661       # todo: will wghole fail to start without internet connectivity?
2662       # if so, we need to set it automatically restart infinitely,
2663       # and same with exim.
2664       wgholeip=$(sed -rn 's/^ *Address *= *([^/]+).*/\1/p' /etc/wireguard/wghole.conf)
2665       cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2666 dc_other_hostnames='eximbackup.b8.nz'
2667 dc_local_interfaces='127.0.0.1;::1;$wgholeip'
2668 EOF
2669     else
2670       cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2671 # Note: If theres like a temporary problem where mail gets sent to
2672 # one of these hosts, if exim isnt listening, it will be a temporary error
2673 # instead of a permanent 5xx.
2674 dc_local_interfaces='127.0.0.1;::1'
2675 EOF
2676     fi
2677     cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2678 dc_eximconfig_configtype='smarthost'
2679 dc_smarthost='$smarthost'
2680 EOF
2681
2682     hostname -f |i /etc/mailname
2683     cat >>/etc/exim4/update-exim4.conf.conf <<EOF
2684 # The manpage incorrectly states this will do header rewriting, but
2685 # that only happens if we have dc_hide_mailname is set.
2686 dc_readhost='iankelling.org'
2687 # Only used in case of bounces.
2688 dc_localdelivery='maildir_home'
2689 EOF
2690     ;;
2691 esac
2692
2693
2694
2695
2696 # ** $MAILHOST|bk, things that belong at the end
2697 case $HOSTNAME in
2698   $MAIL_HOST|bk)
2699     # config for the non-nn exim
2700     m rsync -ra --delete /etc/exim4/ /etc/myexim4
2701     # If we ever wanted to have a separate spool,
2702     # we could do it like this.
2703 #     cat >>/etc/exim4/conf.d/main/000_local-nn <<'EOF'
2704 # spool_directory = /var/spool/myexim4
2705 # EOF
2706     cat >>/etc/myexim4/update-exim4.conf.conf <<'EOF'
2707 dc_eximconfig_configtype='smarthost'
2708 dc_smarthost='nn.b8.nz'
2709 EOF
2710     ;;&
2711   bk)
2712
2713     # config for the non-nn exim
2714     cat >/etc/myexim4/conf.d/main/000_local-nn <<'EOF'
2715 MAIN_HARDCODE_PRIMARY_HOSTNAME = mail2.iankelling.org
2716 EOF
2717     ;;
2718   $MAIL_HOST)
2719     # for bk, we have a exim4in.service that will do this for us.
2720     m update-exim4.conf -d /etc/myexim4
2721     ;;
2722 esac
2723
2724 # * spool dir setup
2725
2726 # ** bind mount setup
2727 # put spool dir in directory that spans multiple distros.
2728 # based on http://www.postfix.org/qmgr.8.html and my notes in gnus
2729 #
2730 dir=/nocow/exim4
2731 sdir=/var/spool/exim4
2732 # we only do this if our system has $dir
2733
2734 # this used to do a symlink, but, in the boot logs, /nocow would get mounted succesfully,
2735 # about 2 seconds later, exim starts, and immediately puts into paniclog:
2736 # honVi-0000u3-82 Failed to create directory "/var/spool/exim4/input": No such file or directory
2737 # so, im trying a bind mount to get rid of that.
2738 if [[ -e /nocow ]]; then
2739   if ! grep -Fx "/nocow/exim4  /var/spool/exim4  none  bind  0 0" /etc/fstab; then
2740     echo "/nocow/exim4  /var/spool/exim4  none  bind  0 0" >>/etc/fstab
2741   fi
2742   i /etc/systemd/system/exim4.service.d/override.conf <<'EOF'
2743 [Unit]
2744 # without local-fs on exim, we get these kind of errors in paniclog on shutdown:
2745 # Failed to create spool file /var/spool/exim4//input//1jCLxz-0008V4-V9-D: Permission denied
2746 After=local-fs.target
2747 EOF
2748   if ! mountpoint -q $sdir; then
2749     stopifactive exim4 exim4in
2750     if [[ -L $sdir ]]; then
2751       m rm $sdir
2752     fi
2753     if [[ ! -e $dir && -d $sdir ]]; then
2754       m mv $sdir $dir
2755     fi
2756     if [[ ! -d $sdir ]]; then
2757       m mkdir $sdir
2758       m chmod 000 $sdir # only want it to be used when its mounted
2759     fi
2760     m mount $sdir
2761   fi
2762 fi
2763
2764
2765
2766 # ** exim/spool uid setup
2767 # i have the spool directory be common to distro multi-boot, so
2768 # we need the uid to be the same. 608 cuz it's kind of in the middle
2769 # of the free system uids.
2770 IFS=:; read -r _ _ uid _ < <(getent passwd Debian-exim ||:) ||:; unset IFS
2771 IFS=:; read -r _ _ gid _ < <(getent group Debian-exim ||:) ||:; unset IFS
2772 if [[ ! $uid ]]; then
2773   # from /var/lib/dpkg/info/exim4-base.postinst, plus uid and gid options
2774   m adduser --uid 608 --system --group --quiet --home /var/spool/exim4 \
2775     --no-create-home --disabled-login --force-badname Debian-exim
2776 elif [[ $uid != 608 ]]; then
2777   stopifactive exim4 exim4in
2778   m usermod -u 608 Debian-exim
2779   m groupmod -g 608 Debian-exim
2780   m usermod -g 608 Debian-exim
2781   m find / /nocow -path ./var/tmp -prune -o -xdev -uid $uid -execdir chown -h 608 {} +
2782   m find / /nocow -path ./var/tmp -prune -o -xdev -gid $gid -execdir chgrp -h 608 {} +
2783 fi
2784
2785 # * start / stop services
2786
2787 reifactive dnsmasq nscd
2788
2789 if $reload; then
2790   m systemctl daemon-reload
2791 fi
2792
2793 m systemctl --now enable epanicclean.timer
2794
2795 case $HOSTNAME in
2796   je)
2797     /a/exe/web-conf apache2 je.b8.nz
2798     ;;
2799   bk)
2800     /a/exe/web-conf apache2 mail2.iankelling.org
2801     ;;
2802 esac
2803
2804 m /a/bin/ds/mail-cert-cron -1
2805 sre mailcert.timer
2806
2807 case $HOSTNAME in
2808   bk)
2809     # todo, this should be done in distro-begin
2810     soff systemd-resolved
2811     ln -sf 127.0.0.1-resolv/stub-resolv.conf /etc/resolv.conf
2812     ;;&
2813   $MAIL_HOST|bk)
2814     m systemctl --now enable mailnn mailnnroute
2815     ;;&
2816   $MAIL_HOST)
2817     # we use dns to start wg
2818     if $reload; then
2819       sre unbound
2820     else
2821       m systemctl --now enable unbound
2822     fi
2823     ;;&
2824   $MAIL_HOST|bk)
2825     # If these have changes, id rather manually restart it, id rather
2826     # not restart and cause temporary errors
2827     if $reload; then
2828       sre $vpnser
2829     else
2830       m systemctl --now enable $vpnser
2831     fi
2832     if ! systemctl is-active clamav-daemon >/dev/null; then
2833       m systemctl --now enable clamav-daemon
2834       out=$(rsync -aiSAX --chown=root:root --chmod=g-s /a/bin/ds/filesystem/etc/systemd/system/epanicclean.{timer,service} /etc/systemd/system)
2835       if [[ $out ]]; then
2836         reload=true
2837       fi
2838
2839       # note, this will cause paniclog entries because it takes like 45
2840       # seconds for clamav to start, i use ./epanic-clean to remove
2841       # them.
2842     fi
2843     ;;&
2844   $MAIL_HOST|bk|je)
2845     # start spamassassin/dovecot before exim.
2846     sre dovecot spamassassin
2847     # need to wait a bit before restarting exim, else I
2848     # get a paniclog entry like: spam acl condition: all spamd servers failed
2849     sleep 3
2850     m systemctl --now enable mailclean.timer
2851     ;;&
2852   $MAIL_HOST)
2853     # < 2.1 (eg: in t9), uses a different data format which required manual
2854     # migration. dont start if we are running an old version.
2855     if dpkg --compare-versions $(dpkg -s radicale | awk '$1 == "Version:" { print $2 }') ge 2.1; then
2856       m systemctl --now enable radicale
2857     fi
2858     ;;&
2859 esac
2860
2861 # last use of $reload happens in previous block
2862 rm -f /var/local/mail-setup-reload
2863
2864
2865 case $HOSTNAME in
2866   $MAIL_HOST|bk|je) : ;;
2867   *)
2868     soff radicale mailclean.timer dovecot spamassassin $vpnser mailnn clamav-daemon
2869     ;;
2870 esac
2871
2872 sre exim4
2873
2874 case $HOSTNAME in
2875   $MAIL_HOST)
2876     m systemctl --now enable mailbindwatchdog
2877   ;;
2878   *)
2879     soff mailbindwatchdog
2880     ;;
2881 esac
2882
2883
2884 case $HOSTNAME in
2885   bk) sre exim4in ;;
2886 esac
2887
2888 # * mail monitoring / testing
2889
2890 # note, to test clamav, send an email with body that only contains
2891 # https://en.wikipedia.org/wiki/EICAR_test_file
2892 # which set malware_name to Eicar-Signature
2893 case $HOSTNAME in
2894   $MAIL_HOST|bk|je)
2895     # note: cronjob "ian" also does some important monitoring
2896     # todo: this will sometimes cause an alert because mailtest-check will run
2897     # before we have setup network namespace and spamassassin
2898     cat >/etc/cron.d/mailtest <<EOF
2899 SHELL=/bin/bash
2900 PATH=/usr/bin:/bin:/usr/local/bin
2901 MAILTO=alerts@iankelling.org
2902 */5 * * * *   $u send-test-forward |& log-once send-test-forward
2903 */10 * * * *   root chmod -R g+rw /m/md/bounces |& log-once -1 bounces-chmod
2904 # im seeing some intermittent failures on the slow check, do it all the time
2905 # for now. It looks like a dns failure.
2906 #5-59/5 * * * *   root mailtest-check |& log-once -1 mailtest-check
2907 #0 * * * *   root mailtest-check slow |& log-once -1 mailtest-slow
2908 */5 * * * *   root timeout 290 mailtest-check slow |& log-once -12 mailtest-check
2909 EOF
2910     m sudo rsync -ahhi --chown=root:root --chmod=0755 \
2911       /b/ds/mailtest-check /b/ds/check-remote-mailqs /usr/local/bin/
2912     ;;&
2913   $MAIL_HOST)
2914     test_froms=(ian@iankelling.org z@zroe.org iank@gnu.org)
2915     test_to="testignore@expertpathologyreview.com, testignore@je.b8.nz, testignore@amnimal.ninja, jtuttle@gnu.org"
2916
2917     cat >>/etc/cron.d/mailtest <<EOF
2918 2   * * * *   root check-remote-mailqs |& log-once check-remote-mailqs
2919 EOF
2920     ;;&
2921   bk)
2922     test_froms=(testignore@expertpathologyreview.com testignore@amnimal.ninja)
2923     test_to="testignore@iankelling.org, testignore@zroe.org, testignore@je.b8.nz"
2924     ;;&
2925   je)
2926     test_froms=(testignore@je.b8.nz)
2927     test_to="testignore@iankelling.org, testignore@zroe.org, testignore@expertpathologyreview.com, testignore@amnimal.ninja"
2928     ;;&
2929   $MAIL_HOST|bk|je)
2930     cat >/usr/local/bin/send-test-forward <<'EOF'
2931 #!/bin/bash
2932 olds=(
2933 $(/sbin/exiqgrep -o 260 -i -r '^(testignore@(iankelling\.org|zroe\.org|expertpathologyreview\.com|amnimal\.ninja|je\.b8\.nz)|jtuttle@gnu\.org)$')
2934 )
2935 if (( ${#olds[@]} )); then
2936   /sbin/exim -Mrm "${olds[@]}" >/dev/null
2937 fi
2938 EOF
2939     for test_from in ${test_froms[@]}; do
2940       cat >>/usr/local/bin/send-test-forward <<EOFOUTER
2941 /usr/sbin/exim -f $test_from -t <<EOF
2942 From: $test_from
2943 To: $test_to
2944 Subject: test \$(date +%Y-%m-%dT%H:%M:%S%z) \$(date +%s)
2945
2946 /usr/local/bin/send-test-forward
2947 EOF
2948 EOFOUTER
2949     done
2950     m chmod +x /usr/local/bin/send-test-forward
2951     ;;
2952   *)
2953     rm -fv /etc/cron.d/mailtest
2954     ;;
2955 esac
2956
2957
2958
2959 # * misc
2960 m sudo -u $u mkdir -p /home/$u/.cache
2961 set -- /m/mucache /home/$u/.cache/mu /m/.mu /home/$u/.mu
2962 while (($#)); do
2963   target=$1
2964   f=$2
2965   shift 2
2966   if [[ ! -L $f ]]; then
2967     if [[ -e $f ]]; then
2968       rm -rf $f
2969     fi
2970     m sudo -u $u ln -sf -T $target $f
2971   fi
2972 done
2973
2974
2975 # /etc/alias setup is debian specific, and exim postinst script sets up
2976 # an /etc/alias from root to the postmaster, based on the question
2977 # exim4-config exim4/dc_postmaster, as long as there exists an entry for
2978 # root, or there was no preexisting aliases file. postfix won\'t set up
2979 # a root to $postmaster alias if it\'s already installed. Easiest to
2980 # just set it ourselves.
2981
2982 # debconf question for postmaster:
2983 # Mail for the 'postmaster', 'root', and other system accounts needs to be redirected
2984 # to the user account of the actual system administrator.
2985 # If this value is left empty, such mail will be saved in /var/mail/mail, which is not
2986 # recommended.
2987 # Note that postmaster\'s mail should be read on the system to which it is directed,
2988 # rather than being forwarded elsewhere, so (at least one of) the users listed here
2989 # should not redirect their mail off this machine. A 'real-' prefix can be used to
2990 # force local delivery.
2991 # Multiple user names need to be separated by spaces.
2992 # Root and postmaster mail recipient:
2993
2994 m exit 0
2995 :
2996
2997 # Local Variables:
2998 # eval: (outline-minor-mode)
2999 # outline-regexp: "\\( *\\)# [*]\\{1,8\\} "
3000 # End:
3001 # this is combined with defining outline-level in init.el