#!/bin/bash
-set -x
+# -*- eval: (outline-minor-mode); -*-
+# * intro
+# Copyright (C) 2019 Ian Kelling
+# SPDX-License-Identifier: AGPL-3.0-or-later
-# Copyright (C) 2016 Ian Kelling
+if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
+pre="${0##*/}:"
+m() { printf "$pre %s\n" "$*"; "$@"; }
+e() { printf "$pre %s\n" "$*"; }
+err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $0: $*" >&2; }
-# http://www.apache.org/licenses/LICENSE-2.0
+shopt -s nullglob
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# todo: make quick backups of maildir, or deliver to multiple hosts.
-
-set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+if [[ -s /usr/local/lib/err ]]; then
+ source /usr/local/lib/err
+elif [[ -s /a/bin/errhandle/err ]]; then
+ source /a/bin/errhandle/err
+else
+ err "no err tracing script found"
+ exit 1
+fi
-[[ $EUID == 0 ]] || exec sudo -E "$BASH_SOURCE" "$@"
+[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
if [[ ! $SUDO_USER ]]; then
echo "$0: error: requires running as nonroot or sudo"
exit 1
Usage: ${0##*/}
Setup exim4 & dovecot & related things
-The minimal assumption we have is that /etc/mailpass exists
-
-
-h|--help Print help and exit.
EOF
exit $1
# hamburger -> preferences -> preferences -> advanced tab -> config editor button -> security.ssl.enable_ocsp_must_staple = false
# background: ovecot does not yet have ocsp stapling support
# reference: https://community.letsencrypt.org/t/simple-guide-using-lets-encrypt-ssl-certs-with-dovecot/2921
+#
+# for phone, k9mail, same thing but username alerts, pass in ivy-pass.
+# also, l2.b8.nz for secondary alerts
+# fetching mail settings: folder poll frequency 10 minutes
#######
-####### begin perstent password instructions ######
+# * perstent password instructions
# # exim passwords:
# # for hosts which have all private files I just use the same user
# # for other hosts, each one get\'s their own password.
# # for generating secure pass, and storing for server too:
-# # user=USUALLY_SAME_AS_HOSTNAME
-# user=li
# f=$(mktemp)
+# I use $HOSTNAME as username
# apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
-# s sed -i "/^$user:/d" /p/c/filesystem/etc/exim4/passwd
-# echo "$user:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
-# echo "mail.iankelling.org 587 $user:$(<$f)" >> /p/c/machine_specific/$user/filesystem/etc/mailpass
-# # then run this script, or part of it which uses /etc/mailpass
+# s sed -i "/^$HOSTNAME:/d" /p/c/filesystem/etc/exim4/passwd
+# echo "$HOSTNAME:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
+# reference: exim4_passwd_client(5)
+# echo "mail.iankelling.org:$HOSTNAME:$(<$f)" > /p/c/machine_specific/$HOSTNAME/filesystem/etc/exim4/passwd.client
+# # then run this script
# # dovecot password, i just need 1 as I\'m the only user
# mkdir /p/c/filesystem/etc/dovecot
-# echo "iank:$(doveadm pw -s ssha256)::::::" >/p/c/filesystem/etc/dovecot/users
-# conflink
-
-
+# echo "iank:$(doveadm pw -s ssha256)::::::" >>/p/c/filesystem/etc/dovecot/users
-# # for ad-hoc testing of some random new host sending mail:
-# user=li # client host username & hostname
-# f=$(mktemp)
-# apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
-# s sed -i "/^$user:/d" /etc/exim4/passwd
-# echo "$user:$(mkpasswd -m sha-512 -s <$f)" | s tee -a /etc/exim4/passwd
-# echo "mail.iankelling.org:$user:$(<$f)" | ssh root@$user dd of=/etc/exim4/passwd.client
####### end perstent password instructions ######
-####### begin persistent dkim/dns instructions #########
+# * persistent dkim/dns instructions
# # Remove 1 level of comments in this section, set the domain var
# # for the domain you are setting up, then run this and copy dns settings
# # into dns.
# # lines 2+: append to hold space
# echo "txt record contents:"
# echo "v=DKIM1; k=rsa; p=$(sed -n '${x;s/\n//gp};2,$H' $domain.pem)"
-# chmod 644 $domain.pem
-# chmod 640 $domain-private.pem
-# # in conflink, we chown these to group debian
-# conflink
-# # selector was also put into /etc/exim4/conf.d/main/000_localmacros,
-# # via the mail-setup scripts
+# # selector was also put into /etc/exim4/conf.d/main/000_local,
# # 2017-02 dmarc policies:
# # host -t txt _dmarc.gmail.com
# # i include fastmail\'s settings, per their instructions,
# # and follow their policy. In mail in a box, or similar instructions,
# # I\'ve seen recommended to not use a restrictive policy.
-# echo "spf dns: name is empty, value: v=spf1 a include:spf.messagingengine.com ?all"
# # to check if dns has updated, you do
# host -a mesmtp._domainkey.$domain
# cat <<'EOF'
# mx records, 2 records each, for * and empty domain
# pri 10 mail.iankelling.org
-# pri 20 in1-smtp.messagingengine.com
-# pri 30 in2-smtp.messagingengine.com
# EOF
####### end persistent dkim instructions #########
-# misc exim notes:
-# useful exim docs:
-# /usr/share/doc/exim4-base/README.Debian.gz
-# /usr/share/doc/exim4-base/spec.txt.gz
-
-# routers, transports, and authenticators are sections, and you define
-# driver instances in those sections, and the manual calls them driver
-# types but there is also a more specific "type" of driver, which is specified
-# with the driver = some_module setting in the driver.
-
-# the driver option must precede and private options (options that are
-# specific to that driver), so follow example of putting it at beginning.
-
-# The full list of option settings for any particular driver instance,
-# including all the defaulted values, can be extracted by making use of
-# the -bP command line option.
-# exim -bP config_file to see what config file it used
-# exim -bP config to see
-
-# exim clear out message queue. as root:
-# adapted from somewhere on stackoverflow.
-# ser stop exim4; sleep 1; exim -bp | exiqgrep -i | xargs exim -Mrm; ser start exim4
-
-# fastmail has changed their smtp server, but the old one still works,
-# I see no reason to bother changing.
-# New one is smtp.fastmail.com
-
-# test delivery & rewrite settings:
-#exim4 -bt iank@localhost
-
-
-postconfin() {
- local MAPFILE
- mapfile -t
- local s
- postconf -ev "${MAPFILE[@]}"
-}
+# * functions constants
e() { printf "%s\n" "$*"; }
-pi() { # package install
- local s f
+pi() { # package install without starting daemons
+ local f
if dpkg -s -- "$@" &> /dev/null; then
return 0;
fi;
while fuser /var/lib/dpkg/lock &>/dev/null; do sleep 1; done
f=/var/cache/apt/pkgcache.bin;
if [[ ! -r $f ]] || (( $(( $(date +%s) - $(stat -c %Y $f ) )) > 60*60*12 )); then
- apt-get update
+ m apt-get update
+ fi
+ f=/usr/sbin/policy-rc.d
+ dd of=$f 2>/dev/null <<EOF
+#!/bin/sh
+exit 101
+EOF
+ chmod +x $f
+ ret=
+ DEBIAN_FRONTEND=noninteractive m apt-get -y install --purge --auto-remove "$@" || ret=$?
+ rm $f
+ if [[ $ret ]]; then
+ err-exit $ret "failed apt-get install above"
fi
- apt-get -y install --purge --auto-remove "$@"
}
-postmaster=$u
+postmaster=alerts
mxhost=mail.iankelling.org
mxport=587
forward=$u@$mxhost
# mxport=587
# forward=ian@iankelling.org
-smarthost="$mxhost::$mxport" # exim
+smarthost="$mxhost::$mxport"
+
+## * Install packages
+# light version of exim does not have sasl auth support.
+pi exim4-daemon-heavy spamassassin spf-tools-perl dnsmasq openvpn
+# our nostart pi fails to avoid enabling
+sudo systemctl disable openvpn
# trisquel 8 = openvpn, debian stretch = openvpn-client
vpn_ser=openvpn-client
vpn_ser=openvpn
fi
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
- # afaik, these will get ignored because they are routing to my own
- # machine, but rm them is safer
- rm -f $(eval echo ~$postmaster)/.forward /root/.forward
+uhome=$(eval echo ~$u)
+### * user forward file
+
+case $HOSTNAME in
+ $MAIL_HOST|l2)
+ # afaik, these will get ignored on MAIL_HOST because they are routing to my own
+ # machine, but rm them is safer
+ rm -fv $uhome/.forward /root/.forward
+ ;;
+ *)
+ # this can\'t be a symlink and has permission restrictions
+ # it might work in /etc/aliases, but this seems more proper.
+ e setting $uhome/.forward to $forward
+ install -m 644 {-o,-g}$u <(e $forward) $uhome/.forward
+ ;;
+esac
+
+# * Mail clean cronjob
+
+cat >/etc/systemd/system/mailclean.timer <<'EOF'
+[Unit]
+Description=Run mailclean daily
+
+[Timer]
+OnCalendar=monthly
+
+[Install]
+WantedBy=timers.target
+EOF
+
+cat >/etc/systemd/system/mailclean.service <<EOF
+[Unit]
+Description=Delete and archive old mail files
+After=multi-user.target
+
+[Service]
+User=$u
+Type=oneshot
+ExecStart=/a/bin/log-quiet/sysd-mail-once mailclean /a/bin/distro-setup/mailclean
+EOF
+
+systemctl daemon-reload
+
+
+# * spamassassin
+
+if [[ $HOSTNAME != "$MAIL_HOST" ]]; then
+ m systemctl stop spamassassin
+ m systemctl disable spamassassin
else
- # this can\'t be a symlink and has permission restrictions
- # it might work in /etc/aliases, but this seems more proper.
- install -m 644 {-o,-g}$postmaster <(e $forward) $(eval echo ~$postmaster)/.forward
-fi
+ # per readme.debian
+ sed -i '/^\s*CRON\s*=/d' /etc/default/spamassassin
+ e CRON=1 >>/etc/default/spamassassin
+ # just noticed this in the config file, seems like a good idea.
+ sed -i '/^\s*NICE\s*=/d' /etc/default/spamassassin
+ e 'NICE="--nicelevel 15"' >>/etc/default/spamassassin
-pi openvpn
+ m systemctl enable spamassassin
+ m systemctl start spamassassin
+ m systemctl reload spamassassin
+ cat >/etc/systemd/system/spamddnsfix.service <<'EOF'
+[Unit]
+Description=spamd dns bug fix cronjob
+
+[Service]
+Type=oneshot
+ExecStart=/a/bin/distro-setup/spamd-dns-fix
+EOF
+ # 2017-09, debian closed the bug on this saying upstream had fixed it.
+ # remove this when i\'m using the newer package, ie, debian 10, or maybe
+ # ubuntu 18.04.
+ cat >/etc/systemd/system/spamddnsfix.timer <<'EOF'
+[Unit]
+Description=run spamd bug fix script every 10 minutes
+
+[Timer]
+OnActiveSec=60
+# the script looks back 9 minutes into the journal,
+# it takes a second to run,
+# so lets run every 9 minutes and 10 seconds.
+OnUnitActiveSec=550
+
+[Install]
+WantedBy=timers.target
+EOF
+ m systemctl daemon-reload
+ m systemctl restart spamddnsfix.timer
+ m systemctl enable spamddnsfix.timer
+
+fi # [[ $HOSTNAME != "$MAIL_HOST" ]]
+##### end spamassassin config
+
+
+# * Update mail cert
if [[ -e /p/c/filesystem ]]; then
# allow failure of these commands when our internet is down, they are likely not needed,
# we check that a valid cert is there already.
# systemd, buuut it can remake the tun device unexpectedly, i got this in the log
# after my internet was down for a bit:
# NOTE: Pulled options changed on restart, will need to close and reopen TUN/TAP device.
- /a/exe/vpn-mk-client-cert -b mail -n mail -s /b/ds/mail-route li.iankelling.org
+ m /a/exe/vpn-mk-client-cert -b mail -n mail -s /b/ds/mail-route li.iankelling.org
fi
fi
-cat >/etc/systemd/system/offlineimapsync.timer <<'EOF'
-[Unit]
-Description=Run offlineimap-sync once every min
-[Timer]
-OnCalendar=*:0/1
-[Install]
-WantedBy=timers.target
+f=/usr/local/bin/mail-cert-cron
+cat >$f <<'EOF'
+#!/bin/bash
+set -eE -o pipefail
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+
+[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
+
+f=/a/bin/bash_unpublished/source-state
+if [[ -e $f ]]; then
+ source $f
+fi
+if [[ $HOSTNAME != "$MAIL_HOST" ]]; then
+ exit 0
+fi
+local_mx=mail.iankelling.org
+mkdir -p /etc/letsencrypt/live/$local_mx
+chmod 700 /etc/letsencrypt/live
+rsync_common="rsync -ogtL --chown=root:Debian-exim --chmod=640 root@li.iankelling.org:/etc/letsencrypt/live/$local_mx/"
+# allow for temporary connection issues
+${rsync_common}fullchain.pem /etc/exim4/exim.crt ||:
+${rsync_common}privkey.pem /etc/exim4/exim.key ||:
+if ! openssl x509 -checkend $(( 60 * 60 * 24 * 3 )) -noout -in /etc/exim4/exim.crt; then
+ echo "$0: error!: cert rsync failed and it will expire in less than 3 days"
+ exit 1
+fi
+exit 0
EOF
+m chmod 755 $f
-cat >/etc/systemd/system/offlineimapsync.service <<EOF
+cat >/etc/systemd/system/mailcert.service <<'EOF'
[Unit]
-Description=Offlineimap sync
+Description=Mail cert rsync
After=multi-user.target
[Service]
-User=$u
Type=oneshot
-ExecStart=/a/bin/log-quiet/sysd-mail-once offlineimap-sync /a/bin/distro-setup/offlineimap-sync
+ExecStart=/a/bin/log-quiet/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
EOF
-cat >/etc/systemd/system/mailclean.timer <<'EOF'
+cat >/etc/systemd/system/mailcert.timer <<'EOF'
[Unit]
-Description=Run mailclean daily
+Description=Run mail-cert once a day
[Timer]
-OnCalendar=monthly
+OnCalendar=daily
[Install]
WantedBy=timers.target
EOF
+m systemctl daemon-reload
+m systemctl start mailcert
+m systemctl restart mailcert.timer
+m systemctl enable mailcert.timer
-cat >/etc/systemd/system/mailclean.service <<EOF
-[Unit]
-Description=Delete and archive old mail files
-After=multi-user.target
-[Service]
-User=$u
-Type=oneshot
-ExecStart=/a/bin/log-quiet/sysd-mail-once mailclean /a/bin/distro-setup/mailclean
-EOF
-systemctl daemon-reload
+# * common exim4 config
+source /a/bin/bash_unpublished/source-state
-# wording of question from dpkg-reconfigure exim4-config
-# 1. internet site; mail is sent and received directly using SMTP
-# 2. mail sent by smarthost; received via SMTP or fetchmail
-# 3. mail sent by smarthost; no local mail
-# 4. local delivery only; not on a network
-# 5. no configuration at this time
-#
-# Note, I have used option 2 in the past for receiving mail
-# from lan hosts, sending external mail via another smtp server.
-#
-# Note, other than configtype, we could set all the options in
-# both types of configs without harm, they would either be
-# ignored or be disabled by other settings, but the default
-# local_interfaces definitely makes things more secure.
-
-# most of these settings get translated into settings
-# in /etc/exim4/update-exim4.conf.conf
-# how /etc/exim4/update-exim4.conf.conf translates into actual exim settings is
-# documented in man update-exim4.conf, which outputs to the config that
-# exim actually reads. except the man page is not perfect, for example,
-# it doesn't document that it sets
-# DCconfig_${dc_eximconfig_configtype}" "1"
-# which is a line from update-exim4.conf, which is a relatively short bash script.
-# mailname setting sets /etc/mailname
-
-debconf-set-selections <<EOF
-exim4-config exim4/use_split_config boolean true
-EOF
-
-source /a/bin/bash_unpublished/source-semi-priv
-mkdir -p /etc/exim4/conf.d/{main,transport,auth,router}
-
-cat >/etc/exim4/rcpt_local_acl <<'EOF'
-# Only hosts we control send to mail.iankelling.org, so make sure
+if [[ ! $MAIL_HOST ]]; then
+ err "\$MAIL_HOST not set"
+fi
+
+m sudo gpasswd -a iank adm #needed for reading logs
+
+
+### make local bounces go to normal maildir
+# local mail that bounces goes to /Maildir or /root/Maildir
+dirs=(/m/md/bounces/{cur,tmp,new})
+m mkdir -p ${dirs[@]}
+m chown iank:iank /m /m/md
+m ln -sfT /m/md /m/iank
+m chmod 700 /m /m/md
+m chown -R $u:Debian-exim /m/md/bounces
+m chmod 775 ${dirs[@]}
+m usermod -a -G Debian-exim $u
+for d in /Maildir /root/Maildir; do
+ if [[ ! -L $d ]]; then
+ m rm -rf $d
+ fi
+ m ln -sf -T /m/md/bounces $d
+done
+
+# Note, even the server needs permissions of this file right
+# if it exists, so do this up here.
+f=/p/c/filesystem/etc/exim4/passwd.client
+if [[ ! -e $f ]]; then
+ f=/p/c/machine_specific/$HOSTNAME/filesystem/etc/exim4/passwd.client
+fi
+m sudo rsync -ahhi --chown=root:Debian-exim --chmod=0640 $f /etc/exim4/
+
+# by default, only 10 days of logs are kept. increase that.
+m sed -ri 's/^(\s*rotate\s).*/\11000/' /etc/logrotate.d/exim4-base
+
+
+## https://blog.dhampir.no/content/make-exim4-on-debian-respect-forward-and-etcaliases-when-using-a-smarthost
+# i only need .forwards, so just doing that one.
+cd /etc/exim4/conf.d/router
+b=userforward_higher_priority
+# replace the router name so it is unique
+sed -r s/^\\S+:/$b:/ 600_exim4-config_userforward >175_$b
+
+
+rm -vf /etc/exim4/conf.d/main/000_localmacros # old filename
+cat >/etc/exim4/conf.d/main/000_local <<EOF
+MAIN_TLS_ENABLE = true
+
+# debian exim config added this in 2016 or so?
+# it's part of the smtp spec, to limit lines to 998 chars
+# but a fair amount of legit mail does not adhere to it. I don't think
+# this should be default, like it says in
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=828801
+# todo: the bug for introducing this was about headers, but
+# the fix maybe is for all lines? one says gmail rejects, the
+# other says gmail does not reject. figure out and open a new bug.
+IGNORE_SMTP_LINE_LENGTH_LIMIT = true
+
+# more verbose logs
+MAIN_LOG_SELECTOR = +all
+
+
+# normally empty, I set this so I can set the envelope address
+# when doing mail redelivery to invoke filters. Also allows
+# me exiqgrep and stuff.
+MAIN_TRUSTED_GROUPS = $u
+
+# default is 10. when exim has been down for a bit, fsf mailserver
+# will do a big send in one connection, then exim decides to put
+# the messages in the queue instead of delivering them, to avoid
+# spawning too many delivery processes. Pretty sure my system
+# can handle a lot more, but lets go with this.
+smtp_accept_queue_per_connection = 100
+
+
+DKIM_CANON = relaxed
+DKIM_SELECTOR = li
+
+# from comments in
+# https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
+
+# The file is based on the outgoing domain-name in the from-header.
+DKIM_DOMAIN = \${lc:\${domain:\$h_from:}}
+# sign if key exists
+DKIM_PRIVATE_KEY = \${if exists{/etc/exim4/\${dkim_domain}-private.pem} {/etc/exim4/\${dkim_domain}-private.pem}}
+
+# most of the ones that gmail seems to use.
+# Exim has horrible default of signing unincluded
+# list- headers since they got mentioned in an
+# rfc, but this messes up mailing lists, like gnu/debian which want to
+# keep your dkim signature intact but add list- headers.
+DKIM_SIGN_HEADERS = mime-version:in-reply-to:references:from:date:subject:to
+EOF
+
+rm -fv /etc/exim4/rcpt_local_acl # old path
+cat >/etc/exim4/conf.d/rcpt_local_acl <<'EOF'
+# Only hosts we control send to @mail.iankelling.org, so make sure
# they are all authed.
# Note, if we wanted authed senders for all domains,
# we could make this condition in acl_check_mail
!authenticated = *
domains = mail.iankelling.org
EOF
-cat >/etc/exim4/data_local_acl <<'EOF'
+rm -fv /etc/exim4/data_local_acl # old path
+cat >/etc/exim4/conf.d/data_local_acl <<'EOF'
# Except for the "condition =", this was
# a comment in the check_data acl. The comment about this not
# being suitable is mostly bs. The only thing related I found was to
# suggested in official docs, and 100k in the wiki example because
# those docs are rather old and I see a 110k spam message
# pretty quickly looking through my spam folder.
- warn
- condition = ${if < {$message_size}{2000K}}
- spam = Debian-exim:true
- add_header = X-Spam_score: $spam_score\n\
- X-Spam_score_int: $spam_score_int\n\
- X-Spam_bar: $spam_bar\n\
- X-Spam_report: $spam_report
+warn
+ condition = ${if < {$message_size}{2000K}}
+ spam = Debian-exim:true
+ add_header = X-Spam_score: $spam_score\n\
+ X-Spam_score_int: $spam_score_int\n\
+ X-Spam_bar: $spam_bar\n\
+ X-Spam_report: $spam_report
+
+#accept
+# spf = pass:fail:softfail:none:neutral:permerror:temperror
+# dmarc_status = reject:quarantine
+# add_header = Reply-to: dmarctest@iankelling.org
EOF
cat >/etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
batch_max = 200
EOF
+cat >/etc/exim4/host_local_deny_exceptions <<'EOF'
+mail.fsf.org
+*.posteo.de
+EOF
+
cat >/etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost <<'EOF'
# smarthost for fsf mail
# ian: copied from /etc/exim4/conf.d/router/200_exim4-config_primary, and added senders = and
EOF
-#### begin mail cert setup ###
-f=/usr/local/bin/mail-cert-cron
-cat >$f <<'EOF'
-set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
-
-[[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
-
-f=/a/bin/bash_unpublished/source-semi-priv
-if [[ -e $f ]]; then
- source $f
-fi
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
- local_mx=mail.iankelling.org
- rsync_common="rsync -ogtL --chown=root:Debian-exim --chmod=640 root@li.iankelling.org:/etc/letsencrypt/live/$local_mx/"
- ${rsync_common}fullchain.pem /etc/exim4/exim.crt
- ret=$?
- ${rsync_common}privkey.pem /etc/exim4/exim.key
- new_ret=$?
- if [[ $ret != $new_ret ]]; then
- echo "$0: error: differing rsync returns, $ret, $new_ret"
- exit 1
- fi
-fi
-if [[ $new_ret != 0 ]]; then
- if ! openssl x509 -checkend $(( 60 * 60 * 24 * 3 )) -noout -in /etc/exim4/exim.crt; then
- echo "$0: error!: cert rsync failed and it will expire in less than 3 days"
- exit 1
- fi
-fi
-exit 0
-EOF
-chmod 755 $f
-
-cat >/etc/systemd/system/mailcert.service <<'EOF'
-[Unit]
-Description=Mail cert rsync
-After=multi-user.target
-
-[Service]
-Type=oneshot
-ExecStart=/a/bin/log-quiet/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
-EOF
-
-cat >/etc/systemd/system/mailcert.timer <<'EOF'
-[Unit]
-Description=Run mail-cert once a day
-
-[Timer]
-OnCalendar=daily
-
-[Install]
-WantedBy=timers.target
-EOF
-systemctl daemon-reload
-systemctl start mailcert
-systemctl restart mailcert.timer
-systemctl enable mailcert.timer
-
-##### end mailcert setup #####
-
-
-
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
-
- debconf-set-selections <<EOF
-# Mail Server configuration
-# -------------------------
-
-# Please select the mail server configuration type that best meets your needs.
-
-# Systems with dynamic IP addresses, including dialup systems, should generally be
-# configured to send outgoing mail to another machine, called a 'smarthost' for
-# delivery because many receiving systems on the Internet block incoming mail from
-# dynamic IP addresses as spam protection.
-
-# A system with a dynamic IP address can receive its own mail, or local delivery can be
-# disabled entirely (except mail for root and postmaster).
-
-# 1. internet site; mail is sent and received directly using SMTP
-# 2. mail sent by smarthost; received via SMTP or fetchmail
-# 3. mail sent by smarthost; no local mail
-# 4. local delivery only; not on a network
-# 5. no configuration at this time
-
-# General type of mail configuration: 1
-exim4-config exim4/dc_eximconfig_configtype select internet site; mail is sent and received directly using SMTP
-
-
-
-# The 'mail name' is the domain name used to 'qualify' mail addresses without a domain
-# name.
-
-# This name will also be used by other programs. It should be the single, fully
-# qualified domain name (FQDN).
-
-# Thus, if a mail address on the local host is foo@example.org, the correct value for
-# this option would be example.org.
-
-# This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
-
-# System mail name:
-# iank: see comment elsewhere on mailname
-exim4-config exim4/mailname string mail.iankelling.org
-
-
-
-
-# Please enter a semicolon-separated list of recipient domains for which this machine
-# should consider itself the final destination. These domains are commonly called
-# 'local domains'. The local hostname (kd.lan) and 'localhost' are always added
-# to the list given here.
-
-# By default all local domains will be treated identically. If both a.example and
-# b.example are local domains, acc@a.example and acc@b.example will be delivered to the
-# same final destination. If different domain names should be treated differently, it
-# is necessary to edit the config files afterwards.
-
-# Other destinations for which mail is accepted:
-# iank.bid is for testing
-# mail.iankelling.org is for machines i own
-exim4-config exim4/dc_other_hostnames string *.iankelling.org;iankelling.org;*iank.bid;iank.bid;*zroe.org;zroe.org;*.b8.nz;b8.nz
-
-
-
-
-# Please enter a semicolon-separated list of IP addresses. The Exim SMTP listener
-# daemon will listen on all IP addresses listed here.
-
-# An empty value will cause Exim to listen for connections on all available network
-# interfaces.
-
-# If this system only receives mail directly from local services (and not from other
-# hosts), it is suggested to prohibit external connections to the local Exim daemon.
-# Such services include e-mail programs (MUAs) which talk to localhost only as well as
-# fetchmail. External connections are impossible when 127.0.0.1 is entered here, as
-# this will disable listening on public network interfaces.
-
-# IP-addresses to listen on for incoming SMTP connections:
-exim4-config exim4/dc_local_interfaces string
-
-
-
-
-# Mail for the 'postmaster', 'root', and other system accounts needs to be redirected
-# to the user account of the actual system administrator.
-
-# If this value is left empty, such mail will be saved in /var/mail/mail, which is not
-# recommended.
-
-# Note that postmaster\'s mail should be read on the system to which it is directed,
-# rather than being forwarded elsewhere, so (at least one of) the users listed here
-# should not redirect their mail off this machine. A 'real-' prefix can be used to
-# force local delivery.
-
-# Multiple user names need to be separated by spaces.
-
-# Root and postmaster mail recipient:
-exim4-config exim4/dc_postmaster string $postmaster
-
-
-
-# Exim is able to store locally delivered email in different formats. The most commonly
-# used ones are mbox and Maildir. mbox uses a single file for the complete mail folder
-# stored in /var/mail/. With Maildir format every single message is stored in a
-# separate file in ~/Maildir/.
-
-# Please note that most mail tools in Debian expect the local delivery method to be
-# mbox in their default.
-
-# 1. mbox format in /var/mail/ 2. Maildir format in home directory
-
-# Delivery method for local mail: 2
-exim4-config exim4/dc_localdelivery select Maildir format in home directory
-EOF
- echo mail.iankelling.org > /etc/mailname
-
- # MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
- # smarthost config type, not sure. all other settings
- # would be unused in that config type.
- rm -f /etc/exim4/conf.d/main/000_localmacros # old filename
- cat >/etc/exim4/conf.d/main/000_local <<EOF
-# enable 587 in addition to the default 25, so that
-# i can send mail where port 25 is firewalled by isp
-daemon_smtp_ports = 25 : 587
-# i don't have ipv6 setup for my vpn tunnel yet.
-disable_ipv6 = true
-
-MAIN_TLS_ENABLE = true
-
-DKIM_CANON = relaxed
-DKIM_SELECTOR = li
-
-# from comments in
-# https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
-
-# The file is based on the outgoing domain-name in the from-header.
-DKIM_DOMAIN = \${lc:\${domain:\$h_from:}}
-# sign if key exists
-DKIM_PRIVATE_KEY= \${if exists{/etc/exim4/\${dkim_domain}-private.pem} {/etc/exim4/\${dkim_domain}-private.pem}}
-
-
-# failing message on mail-tester.com:
-# We check if there is a server (A Record) behind your hostname kd.
-# You may want to publish a DNS record (A type) for the hostname kd or use a different hostname in your mail software
-# https://serverfault.com/questions/46545/how-do-i-change-exim4s-primary-hostname-on-a-debian-box
-# and this one seemed appropriate from grepping config.
-# I originally set this to li.iankelling.org, but then ended up with errors when li tried to send
-# mail to kd, so this should basically be a name that no host has as their
-# canonical hostname since the actual host sits behind a nat and changes.
-# Seems logical for this to be the same as mailname.
-MAIN_HARDCODE_PRIMARY_HOSTNAME = mail.iankelling.org
-
-# normally empty, I set this so I can set the envelope address
-# when doing mail redelivery to invoke filters
-MAIN_TRUSTED_GROUPS = $u
-
-LOCAL_DELIVERY = dovecot_lmtp
-
-# options exim has to avoid having to alter the default config files
-CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/rcpt_local_acl
-CHECK_DATA_LOCAL_ACL_FILE = /etc/exim4/data_local_acl
-
-# debian exim config added this in 2016 or so?
-# it's part of the smtp spec, to limit lines to 998 chars
-# but a fair amount of legit mail does not adhere to it. I don't think
-# this should be default, like it says in
-# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=828801
-# todo: the bug for introducing this was about headers, but
-# the fix maybe is for all lines? one says gmail rejects, the
-# other says gmail does not reject. figure out and open a new bug.
-IGNORE_SMTP_LINE_LENGTH_LIMIT = true
-
-# most of the ones that gmail seems to use.
-# Exim has horrible default of signing unincluded
-# list- headers since they got mentioned in an
-# rfc, but this messes up mailing lists, like gnu/debian which want to
-# keep your dkim signature intact but add list- headers.
-DKIM_SIGN_HEADERS = mime-version:in-reply-to:references:from:date:subject:to
-
-# recommended if dns is expected to work
-CHECK_RCPT_VERIFY_SENDER = true
-# seems like a good idea
-CHECK_DATA_VERIFY_HEADER_SENDER = true
-CHECK_RCPT_SPF = true
-CHECK_RCPT_REVERSE_DNS = true
-CHECK_MAIL_HELO_ISSUED = true
+cat >/etc/exim4/update-exim4.conf.conf <<'EOF'
+# default stuff, i havent checked if its needed
+dc_minimaldns='false'
+dc_relay_nets=''
+CFILEMODE='644'
+dc_use_split_config='true'
+dc_local_interfaces=''
+dc_mailname_in_oh='true'
EOF
- ####### begin dovecot setup ########
+# ** dovecot
+dovecot-setup() {
# based on a little google and package search, just the dovecot
# packages we need instead of dovecot-common.
#
# internet. I was torn about whether to do this or not, meh.
pi dovecot-core dovecot-imapd dovecot-sieve dovecot-lmtpd
- # if we changed 90-sieve.conf and removed the active part of the
+ for f in /p/c{/machine_specific/$HOSTNAME,}/filesystem/etc/dovecot/users; do
+ e $f
+ if [[ -e $f ]]; then
+ m sudo rsync -ahhi --chown=root:dovecot --chmod=0640 $f /etc/dovecot/
+ break
+ fi
+ done
+ for f in /p/c/subdir_files/sieve/*sieve /a/c/subdir_files/sieve/*sieve; do
+ m sudo -u $u /a/exe/lnf -T $f $uhome/sieve/${f##*/}
+ done
+ # If we changed 90-sieve.conf and removed the active part of the
# sieve option, we wouldn\'t need this, but I\'d rather not modify a
# default config if not needed. This won\'t work as a symlink in /a/c
# unfortunately.
- sudo -u $postmaster /a/exe/lnf -T sieve/main.sieve $(eval echo ~$postmaster)/.dovecot.sieve
+ if [[ -e $uhome/sieve/personal.sieve ]]; then
+ m sudo -u $u /a/exe/lnf -T sieve/main.sieve $uhome/.dovecot.sieve
+ fi
+ # we set this later in local.conf
sed -ri -f - /etc/dovecot/conf.d/10-mail.conf <<'EOF'
-1i mail_location = maildir:/m/md:LAYOUT=fs:INBOX=/m/md/INBOX
/^\s*mail_location\s*=/d
EOF
EOF
- cat >/etc/dovecot/local.conf <<'EOF'
+ cat >/etc/dovecot/local.conf <<EOF
# so I can use a different login that my shell login for mail. this is
# worth doing solely for the reason that if this login is compromised,
# it won't also compromise my shell password.
ssl_key = </etc/exim4/exim.key
# https://github.com/certbot/certbot/raw/master/certbot-apache/certbot_apache/options-ssl-apache.conf
# in my cert cronjob, I check if that has changed upstream.
-ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
+ssl_cipher_list = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS
# ian: added this, more secure, per google etc
ssl_prefer_server_ciphers = yes
+# ian: %u is used for alerts user vs iank
+mail_location = maildir:/m/%u:LAYOUT=fs:INBOX=/m/%u/INBOX
+mail_uid = $u
+mail_gid = $u
+
# for debugging info, uncomment these.
# logs go to syslog and to /var/log/mail.log
# auth_verbose=yes
#mail_debug=yes
EOF
- ####### end dovecot setup ########
+ ####### end dovecot-setup ########
+}
- # https://selivan.github.io/2017/12/30/systemd-serice-always-restart.html
- d=/etc/systemd/system/openvpn@mail
- mkdir -p $d
- cat >$d/override.conf <<'EOF'
-[Service]
-Restart=always
-# time to sleep before restarting a service
-RestartSec=1
-[Unit]
-# StartLimitIntervalSec in recent systemd versions
-StartLimitInterval=0
+
+# * if MAIL_HOST
+case $HOSTNAME in
+ $MAIL_HOST)
+ dovecot-setup
+
+ # ** exim
+
+ sudo rsync -ahhi --chown=root:Debian-exim --chmod=0640 \
+ /p/c/filesystem/etc/exim4/passwd /p/c/filesystem/etc/exim4/*.pem /etc/exim4/
+
+
+ # mail.iankelling.org so local imap clients can connect with tls and
+ # when they happen to not be local.
+ sed -ri -f - /etc/hosts <<'EOF'
+/^127\.0\.1\.1.* mail\.iankelling\.org\b/{p;d}
+/^127\.0\.1\.1 /s/ *$/ mail.iankelling.org/
EOF
- systemctl enable offlineimapsync.timer
- systemctl start offlineimapsync.timer
- systemctl enable mailclean.timer
- systemctl start mailclean.timer
- systemctl restart $vpn_ser@mail
- systemctl enable $vpn_ser@mail
- systemctl enable dovecot
- systemctl restart dovecot
-
-else # $HOSTNAME != $MAIL_HOST
- systemctl disable offlineimapsync.timer &>/dev/null ||:
- systemctl stop offlineimapsync.timer &>/dev/null ||:
- systemctl disable mailclean.timer &>/dev/null ||:
- systemctl stop mailclean.timer &>/dev/null ||:
- systemctl disable $vpn_ser@mail
- systemctl stop $vpn_ser@mail
- systemctl disable dovecot ||:
- systemctl stop dovecot ||:
- #
- #
- # would only exist because I wrote it i the previous condition,
- # it\'s not part of exim
- rm -f /etc/exim4/conf.d/main/000_localmacros
- debconf-set-selections <<EOF
-exim4-config exim4/dc_eximconfig_configtype select mail sent by smarthost; no local mail
-exim4-config exim4/dc_smarthost string $smarthost
-# afaik, on dpkg-reconfigure noninteractive, this sets /etc/mailname if it does not exist.
-# if it does exist, it immediately changes the value to whats in /etc/mailname.
-# So, I don't think there's any point in setting it, but might as well since
-# ignoring what I set here is brain dead and might change.
-exim4-config exim4/mailname string $(hostname -f)
-EOF
- hostname -f > /etc/mailname
-
-fi # end $HOSTNAME != $MAIL_HOST
-
-# if we already have it installed, need to reconfigure, without being prompted
-if dpkg -s exim4-config &>/dev/null; then
- # gotta remove this, otherwise the set-selections are completely
- # ignored. It woulda been nice if this was documented somewhere!
- rm -f /etc/exim4/update-exim4.conf.conf
- while fuser /var/lib/dpkg/lock &>/dev/null; do sleep 1; done
- dpkg-reconfigure -u -fnoninteractive exim4-config
-fi
+ # note: systemd-resolved will consult /etc/hosts, dnsmasq wont. this assumes
+ # weve configured this file in dnsmasq if we are using it.
+ /a/exe/cedit mail /etc/dnsmasq-servers.conf <<'EOF' || [[ $? == 1 ]]
+server=/mail.iankelling.org/127.0.1.1
+EOF
+ if systemctl is-active dnsmasq >/dev/null; then
+ m systemctl restart dnsmasq
+ fi
+ m nscd -i hosts
-# i have the spool directory be common to distro multi-boot, so
-# we need the uid to be the same. 608 cuz it's kind of in the middle
-# of the free system uids.
-IFS=:; read _ _ uid _ < <(getent passwd Debian-exim ||:) ||:; unset IFS
-IFS=:; read _ _ gid _ < <(getent group Debian-exim ||:) ||:; unset IFS
-if [[ ! $uid ]]; then
- # from /var/lib/dpkg/info/exim4-base.postinst, plus uid and gid options
- adduser --uid 608 --system --group --quiet --home /var/spool/exim4 \
- --no-create-home --disabled-login --force-badname Debian-exim
-elif [[ $uid != 608 ]]; then
- systemctl stop exim4 ||:
- usermod -u 608 Debian-exim
- groupmod -g 608 Debian-exim
- usermod -g 608 Debian-exim
- find / /nocow -xdev -uid $uid -exec chown -h 608 {} +
- find / /nocow -xdev -gid $gid -exec chgrp -h 608 {} +
-fi
+ # I used to use debconf-set-selections + dpkg-reconfigure,
+ # which then updates this file
+ # but the process is slower than updating it directly and then I want to set other things in
+ # update-exim4.conf.conf, so there's no point.
+ # The file is documented in man update-exim4.conf,
+ # except the man page is not perfect, read the bash script to be sure about things.
+ # The debconf questions output is additional documentation that is not
+ # easily accessible, but super long, along with the initial default comment in this
+ # file, so I've saved that into ./mail-notes.conf.
-# light version of exim does not have sasl auth support.
-pi exim4-daemon-heavy spamassassin spf-tools-perl
+ cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+# note: some things we don't set that are here by default because they are unused.
+dc_eximconfig_configtype='internet'
+# man page: is used to build the local_domains list, together with "localhost"
+# iank.bid is for testing
+# mail.iankelling.org is for machines i own
+dc_other_hostnames='*.iankelling.org;iankelling.org;*iank.bid;iank.bid;*zroe.org;zroe.org;*.b8.nz;b8.nz'
+
+# from man page:
+# Is a list of domains for which we accept mail from anywhere on the Internet but which are not delivered locally, e.g.
+# because this machine serves as secondary MX for these domains. Sets MAIN_RELAY_TO_DOMAINS.
+# todo: we should not accept from anywhere, only the mx for fsf.
+dc_relay_domains='*.fsf.org;fsf.org'
+dc_localdelivery='dovecot_lmtp'
+EOF
-##### begin spamassassin config
-systemctl enable spamassassin
-# per readme.debian
-sed -i '/^\s*CRON\s*=/d' /etc/default/spamassassin
-e CRON=1 >>/etc/default/spamassassin
-# just noticed this in the config file, seems like a good idea.
-sed -i '/^\s*NICE\s*=/d' /etc/default/spamassassin
-e 'NICE="--nicelevel 15"' >>/etc/default/spamassassin
-systemctl start spamassassin
-systemctl reload spamassassin
-cat >/etc/systemd/system/spamddnsfix.service <<'EOF'
-[Unit]
-Description=spamd dns bug fix cronjob
+ # the debconf output about mailname is as follows:
+ # The 'mail name' is the domain name used to 'qualify' mail addresses without a domain
+ # name.
+ # This name will also be used by other programs. It should be the single, fully
+ # qualified domain name (FQDN).
+ # Thus, if a mail address on the local host is foo@example.org, the correct value for
+ # this option would be example.org.
+ # This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
-[Service]
-Type=oneshot
-ExecStart=/a/bin/distro-setup/spamd-dns-fix
+ echo mail.iankelling.org > /etc/mailname
+
+ # MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
+ # smarthost config type, not sure. all other settings
+ # would be unused in that config type.
+ cat >>/etc/exim4/conf.d/main/000_local <<EOF
+# enable 587 in addition to the default 25, so that
+# i can send mail where port 25 is firewalled by isp
+daemon_smtp_ports = 25 : 587
+
+
+
+# failing message on mail-tester.com:
+# We check if there is a server (A Record) behind your hostname kd.
+# You may want to publish a DNS record (A type) for the hostname kd or use a different hostname in your mail software
+# https://serverfault.com/questions/46545/how-do-i-change-exim4s-primary-hostname-on-a-debian-box
+# and this one seemed appropriate from grepping config.
+# I originally set this to li.iankelling.org, but then ended up with errors when li tried to send
+# mail to kd, so this should basically be a name that no host has as their
+# canonical hostname since the actual host sits behind a nat and changes.
+# Seems logical for this to be the same as mailname.
+MAIN_HARDCODE_PRIMARY_HOSTNAME = mail.iankelling.org
+
+# options exim has to avoid having to alter the default config files
+CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/conf.d/rcpt_local_acl
+CHECK_DATA_LOCAL_ACL_FILE = /etc/exim4/conf.d/data_local_acl
+
+
+# recommended if dns is expected to work
+CHECK_RCPT_VERIFY_SENDER = true
+# seems like a good idea
+CHECK_DATA_VERIFY_HEADER_SENDER = true
+CHECK_RCPT_SPF = true
+CHECK_RCPT_REVERSE_DNS = true
+CHECK_MAIL_HELO_ISSUED = true
+
+# testing dmarc
+#dmarc_tld_file = /etc/public_suffix_list.dat
EOF
-# 2017-09, debian closed the bug on this saying upstream had fixed it.
-# remove this when i\'m using the newer package, ie, debian 10, or maybe
-# ubuntu 18.04.
-cat >/etc/systemd/system/spamddnsfix.timer <<'EOF'
-[Unit]
-Description=run spamd bug fix script every 10 minutes
-[Timer]
-OnActiveSec=60
-# the script looks back 9 minutes into the journal,
-# it takes a second to run,
-# so lets run every 9 minutes and 10 seconds.
-OnUnitActiveSec=550
+ f=/etc/cron.daily/refresh-dmarc-tld-file
+ cat >$f <<'EOF'
+#!/bin/bash
+cd /etc
+wget -q -N https://publicsuffix.org/list/public_suffix_list.dat
+EOF
+ m chmod 755 $f
-[Install]
-WantedBy=timers.target
+ sed -i --follow-symlinks -f - /etc/aliases <<EOF
+\$a root: $postmaster
+/^root:/d
EOF
-systemctl daemon-reload
-systemctl restart spamddnsfix.timer
-systemctl enable spamddnsfix.timer
-#
-##### end spamassassin config
+ # https://selivan.github.io/2017/12/30/systemd-serice-always-restart.html
+ d=/etc/systemd/system/openvpn@mail.service.d
+ m mkdir -p $d
+ cat >$d/override.conf <<'EOF'
+[Service]
+Restart=always
+# time to sleep before restarting a service
+RestartSec=1
+[Unit]
+# StartLimitIntervalSec in recent systemd versions
+StartLimitInterval=0
+EOF
+ if ! systemctl cat openvpn@mail.service|grep -xF StartLimitInterval=0 &>/dev/null; then
+ # needed for the above config to go into effect
+ m systemctl daemon-reexec
+ fi
-# https://blog.dhampir.no/content/make-exim4-on-debian-respect-forward-and-etcaliases-when-using-a-smarthost
-# i only need .forwards, so just doing that one.
-cd /etc/exim4/conf.d/router
-b=userforward_higher_priority
-# replace the router name so it is unique
-sed -r s/^\\S+:/$b:/ 600_exim4-config_userforward >175_$b
+ m systemctl enable mailclean.timer
+ m systemctl start mailclean.timer
+ m systemctl restart $vpn_ser@mail
+ m systemctl enable $vpn_ser@mail
+ m systemctl enable dovecot
+ m systemctl restart dovecot
+ ;;
+ # * not MAIL_HOST
+ *) # $HOSTNAME != $MAIL_HOST
+ # remove mail. uses 2 lines to properly remove whitespace
+ sed -ri -f - /etc/hosts <<'EOF'
+s#^(127\.0\.1\.1 .*) +mail\.iankelling\.org$#\1#
+s#^(127\.0\.1\.1 .*)mail\.iankelling\.org +(.*)#\1\2#
+EOF
-# begin setup passwd.client
-f=/etc/exim4/passwd.client
-rm -f /etc/exim4/passwd.client
-install -m 640 -g Debian-exim /dev/null $f
-cat /etc/mailpass| while read -r domain port pass; do
- # reference: exim4_passwd_client(5)
- printf "%s:%s\n" "$domain" "$pass" >>$f
-done
-# end setup passwd.client
+ echo | /a/exe/cedit mail /etc/dnsmasq-servers.conf || [[ $? == 1 ]]
+ if systemctl is-active dnsmasq >/dev/null; then
+ m systemctl restart dnsmasq # reload does not ensure new config is used
+ fi
+ m nscd -i hosts
+
+ m systemctl disable mailclean.timer &>/dev/null ||:
+ m systemctl stop mailclean.timer &>/dev/null ||:
+ m systemctl disable $vpn_ser@mail
+ m systemctl stop $vpn_ser@mail
+ #
+ #
+ # would only exist because I wrote it i the previous condition,
+ # it\'s not part of exim
+ rm -fv /etc/exim4/conf.d/main/000_localmacros
+ cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+dc_eximconfig_configtype='smarthost'
+dc_smarthost='$smarthost'
+# The manpage incorrectly states this will do header rewriting, but
+# that only happens if we have dc_hide_mailname is set.
+dc_readhost='iankelling.org'
+EOF
-# by default, only 10 days of logs are kept. increase that.
-sed -ri 's/^(\s*rotate\s).*/\11000/' /etc/logrotate.d/exim4-base
-
-systemctl restart exim4
-
-# /etc/alias setup is debian specific, and
-# exim config sets up an /etc/alias from root to the postmaster, which i
-# config to ian, as long as there exists an entry for root, or there was
-# no preexisting aliases file. based on the postinst file. postfix
-# won\'t set up a root to $postmaster alias if it\'s already installed.
-# Since postfix is not the greatest, just set it ourselves.
-if [[ $postmaster != root ]]; then
- sed -i --follow-symlinks -f - /etc/aliases <<EOF
-\$a root: $postmaster
+ hostname -f >/etc/mailname
+
+
+ ;;&
+ ## we use this host to monitor MAIL_HOST
+ l2)
+ dovecot-setup
+ m systemctl enable dovecot
+ m systemctl restart dovecot
+ cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+# man page: is used to build the local_domains list, together with "localhost"
+# mail.iankelling.org is for machines i own
+dc_other_hostnames='l2.b8.nz'
+dc_localdelivery='dovecot_lmtp'
+EOF
+ # This ends up at alerts mailbox on MAIL_HOST, but using a user that doesn't exist elsewhere
+ # is no good.
+ sed -i --follow-symlinks -f - /etc/aliases <<EOF
+\$a root: iank
/^root:/d
EOF
- newaliases
-fi
+ ;;
+ # not l2 and not MAIL_HOST
+ *)
+
+ # This ends up at alerts mailbox on MAIL_HOST, but using a user that doesn't exist elsewhere
+ # is no good.
+ sed -i --follow-symlinks -f - /etc/aliases <<EOF
+\$a root: root@mail.iankelling.org
+/^root:/d
+EOF
+ cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+# Only used in case of bounces.
+dc_localdelivery='maildir_home'
+EOF
+ m systemctl disable dovecot ||:
+ m systemctl stop dovecot ||:
+ ;;
+esac # end $HOSTNAME != $MAIL_HOST
+
+# * spool dir setup
+
+# ** bind mount setup
# put spool dir in directory that spans multiple distros.
# based on http://www.postfix.org/qmgr.8.html and my notes in gnus
#
dir=/nocow/exim4
sdir=/var/spool/exim4
# we only do this if our system has $dir
-if [[ -e /nocow && $(readlink -f $sdir) != $dir ]]; then
- systemctl stop exim4
- if [[ ! -e $dir && -d $sdir ]]; then
- mv $sdir $dir
- fi
- /a/exe/lnf -T $dir $sdir
-fi
-systemctl restart exim4
-systemctl enable exim4
-
-# MAIL_HOST also does radicale, and easier to start and stop it here
-# for when MAIL_HOST changes, so radicale gets the synced files and
-# does not stop us from remounting /o.
-if dpkg -s radicale &>/dev/null; then
- if [[ $HOSTNAME == $MAIL_HOST ]]; then
- systemctl restart radicale
- systemctl enable radicale
- if [[ -e /etc/logrotate.d/radicale.disabled ]]; then
- mv /etc/logrotate.d/radicale{.disabled,}
+# this used to do a symlink, but, in the boot logs, /nocow would get mounted succesfully,
+# about 2 seconds later, exim starts, and immediately puts into paniclog:
+# honVi-0000u3-82 Failed to create directory "/var/spool/exim4/input": No such file or directory
+# so, im trying a bind mount to get rid of that.
+if [[ -e /nocow ]]; then
+ if ! grep -Fx "/nocow/exim4 /var/spool/exim4 none bind 0 0" /etc/fstab; then
+ echo "/nocow/exim4 /var/spool/exim4 none bind 0 0" >>/etc/fstab
+ fi
+ if ! mountpoint -q $sdir; then
+ m systemctl stop exim4
+ if [[ -L $sdir ]]; then
+ m rm $sdir
fi
- else
- systemctl stop radicale
- systemctl disable radicale
- # weekly logrotate tries to restart radicale even if it's a disabled service in flidas.
- if [[ -e /etc/logrotate.d/radicale ]]; then
- mv /etc/logrotate.d/radicale{,.disabled}
+ if [[ ! -e $dir && -d $sdir ]]; then
+ m mv $sdir $dir
+ fi
+ if [[ ! -d $sdir ]]; then
+ m mkdir $sdir
+ m chmod 000 $sdir # only want it to be used when its mounted
fi
+ m mount $sdir
fi
fi
+
+
+
+# ** exim/spool uid setup
+# i have the spool directory be common to distro multi-boot, so
+# we need the uid to be the same. 608 cuz it's kind of in the middle
+# of the free system uids.
+IFS=:; read -r _ _ uid _ < <(getent passwd Debian-exim ||:) ||:; unset IFS
+IFS=:; read -r _ _ gid _ < <(getent group Debian-exim ||:) ||:; unset IFS
+if [[ ! $uid ]]; then
+ # from /var/lib/dpkg/info/exim4-base.postinst, plus uid and gid options
+ m adduser --uid 608 --system --group --quiet --home /var/spool/exim4 \
+ --no-create-home --disabled-login --force-badname Debian-exim
+elif [[ $uid != 608 ]]; then
+ m systemctl stop exim4 ||:
+ m usermod -u 608 Debian-exim
+ m groupmod -g 608 Debian-exim
+ m usermod -g 608 Debian-exim
+ m find / /nocow -path ./var/tmp -prune -o -xdev -uid $uid -execdir chown -h 608 {} +
+ m find / /nocow -path ./var/tmp -prune -o -xdev -gid $gid -execdir chgrp -h 608 {} +
+fi
+
+
+
+
+# * reload exim
+
+if systemctl is-active exim4 >/dev/null; then
+ m systemctl reload exim4
+else
+ m systemctl start exim4
+fi
+
+
+# * mail monitoring / testing
+
+case $HOSTNAME in
+ $MAIL_HOST|l2)
+ # note: cronjob "ian" also does some important monitoring
+ cat >/etc/cron.d/mailtest <<EOF
+SHELL=/bin/bash
+PATH=/usr/bin:/bin:/usr/local/bin
+*/5 * * * * $u send-test-forward |& log-once send-test-forward
+*/10 * * * * root chmod -R g+rw /m/md/bounces |& log-once -1 bounces-chmod
+EOF
+ ;;&
+ $MAIL_HOST)
+ test_from=ian@iankelling.org
+ test_to=iank@posteo.de
+
+ cat >>/etc/cron.d/mailtest <<EOF
+*/5 * * * * $u mailtest-check |& log-once -1 mailtest-check
+2 * * * * $u check-remote-mailqs |& log-once check-remote-mailqs
+EOF
+ m sudo rsync -ahhi --chown=root:root --chmod=0755 \
+ /b/ds/mailtest-check /b/ds/check-remote-mailqs /usr/local/bin/
+ ;;&
+ l2)
+ test_from=iank@l2.b8.nz
+ test_to=testignore@iankelling.org
+ ;;&
+ $MAIL_HOST|l2)
+ cat >/usr/local/bin/send-test-forward <<EOFOUTER
+#!/bin/bash
+/usr/sbin/exim -t <<EOF
+From: $test_from
+To: $test_to
+Subject: primary_test \$(date +%s) \$(date +%Y-%m-%dT%H:%M:%S%z)
+
+eom
+EOF
+EOFOUTER
+ m chmod +x /usr/local/bin/send-test-forward
+ ;;
+ *)
+ rm -fv /etc/cron.d/mailtest
+ ;;
+esac
+
+
+
+# * misc
+m sudo -u $u ln -sf -T /m/.mu /home/$u/.mu
+
+
+# /etc/alias setup is debian specific, and exim postinst script sets up
+# an /etc/alias from root to the postmaster, based on the question
+# exim4-config exim4/dc_postmaster, as long as there exists an entry for
+# root, or there was no preexisting aliases file. postfix won\'t set up
+# a root to $postmaster alias if it\'s already installed. Easiest to
+# just set it ourselves.
+
+# debconf question for postmaster:
+# Mail for the 'postmaster', 'root', and other system accounts needs to be redirected
+# to the user account of the actual system administrator.
+# If this value is left empty, such mail will be saved in /var/mail/mail, which is not
+# recommended.
+# Note that postmaster\'s mail should be read on the system to which it is directed,
+# rather than being forwarded elsewhere, so (at least one of) the users listed here
+# should not redirect their mail off this machine. A 'real-' prefix can be used to
+# force local delivery.
+# Multiple user names need to be separated by spaces.
+# Root and postmaster mail recipient:
+
+
exit 0
:
iankelling.org / git / distro-setup / blobdiff