X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=mail-setup;h=645510a14049d1c0ff8d61e313a1843b75426ed3;hb=6561b24248188e5bce423acab25c2c14c7e5ce6d;hp=b8440fbfc7fc3684678f851273128102a238cfe4;hpb=effc74a288ee7e4d0a83bbf3335ba10f95eb7b8a;p=distro-setup

diff --git a/mail-setup b/mail-setup
index b8440fb..645510a 100755
--- a/mail-setup
+++ b/mail-setup
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -x
 
-# Copyright (C) 2016 Ian Kelling
+# Copyright (C) 2019 Ian Kelling
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -66,6 +66,7 @@ EOF
 # 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
+# # todo: port is no longer used in mailpass, remove it.
 # 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
 
@@ -148,46 +149,10 @@ 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 "${MAPFILE[@]}"
-}
 e() { printf "%s\n" "$*"; }
 pi() { # package install
-  local s f
+  local f
   if dpkg -s -- "$@" &> /dev/null; then
     return 0;
   fi;
@@ -217,7 +182,7 @@ if [[ ! -e /lib/systemd/system/openvpn-client@.service ]]; then
   vpn_ser=openvpn
 fi
 
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
+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 $(eval echo ~$u)/.forward /root/.forward
@@ -247,27 +212,6 @@ if [[ -e /p/c/filesystem ]]; then
   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
-EOF
-
-cat >/etc/systemd/system/offlineimapsync.service <<EOF
-[Unit]
-Description=Offlineimap sync
-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
-EOF
 
 cat >/etc/systemd/system/mailclean.timer <<'EOF'
 [Unit]
@@ -293,40 +237,12 @@ EOF
 
 systemctl daemon-reload
 
-# 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
+source /a/bin/bash_unpublished/source-state
 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
+# 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
@@ -345,13 +261,18 @@ cat >/etc/exim4/data_local_acl <<'EOF'
 # 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'
@@ -394,6 +315,11 @@ dovecot_lmtp:
         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
@@ -419,11 +345,11 @@ trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 [[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
 
-f=/a/bin/bash_unpublished/source-semi-priv
+f=/a/bin/bash_unpublished/source-state
 if [[ -e $f ]]; then
     source $f
 fi
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
+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
@@ -472,14 +398,24 @@ systemctl enable mailcert.timer
 
 ##### end mailcert setup #####
 
+# comon stuff
+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
 
 
-if [[ $HOSTNAME == $MAIL_HOST ]]; then
+if [[ $HOSTNAME == "$MAIL_HOST" ]]; then
 
   # 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/q
+/^127\.0\.1\.1.* mail\.iankelling\.org\b/{p;d}
 /^127\.0\.1\.1 /s/ *$/ mail.iankelling.org/
 EOF
   /a/exe/cedit mail /etc/dnsmasq-servers.conf <<'EOF' || [[ $? == 1 ]]
@@ -487,116 +423,44 @@ server=/mail.iankelling.org/127.0.1.1
 EOF
   systemctl reload dnsmasq
 
-  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.
+  # 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.
 
-# 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).
+  # 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.
 
-#   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
+  cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+# note: some things we don't set that are here by default because they are unused.
 
-# General type of mail configuration: 1
-exim4-config exim4/dc_eximconfig_configtype select internet site; mail is sent and received directly using SMTP
+dc_eximconfig_configtype='internet'
 
-
-
-# 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:
+# 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
-exim4-config exim4/dc_other_hostnames string *.iankelling.org;iankelling.org;*iank.bid;iank.bid;*zroe.org;zroe.org;*.b8.nz;b8.nz
-
-
-
+dc_other_hostnames='*.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/.
+# 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'
+EOF
 
-# 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
+  # 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.
 
-# 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
@@ -669,8 +533,25 @@ CHECK_DATA_VERIFY_HEADER_SENDER = true
 CHECK_RCPT_SPF = true
 CHECK_RCPT_REVERSE_DNS = true
 CHECK_MAIL_HELO_ISSUED = true
+
+MAIN_LOG_SELECTOR = +all
+
+# testing dmarc
+#dmarc_tld_file = /etc/public_suffix_list.dat
+EOF
+
+  f=/etc/cron.daily/refresh-dmarc-tld-file
+  cat >$f <<'EOF'
+#!/bin/bash
+cd /etc
+wget -nv -N https://publicsuffix.org/list/public_suffix_list.dat
 EOF
+  chmod 755 $f
 
+  sed -i --follow-symlinks -f - /etc/aliases <<EOF
+\$a root: $postmaster
+/^root:/d
+EOF
 
   ####### begin dovecot setup ########
   # based on a little google and package search, just the dovecot
@@ -734,7 +615,7 @@ protocol lmtp {
 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.
@@ -753,8 +634,8 @@ ssl_prefer_server_ciphers = yes
 
 
 mail_location = maildir:/m/%u:LAYOUT=fs:INBOX=/m/%u/INBOX
-mail_uid = iank
-mail_gid = iank
+mail_uid = $u
+mail_gid = $u
 
 # for debugging info, uncomment these.
 # logs go to syslog and to /var/log/mail.log
@@ -777,8 +658,8 @@ RestartSec=1
 StartLimitInterval=0
 EOF
 
-  systemctl enable offlineimapsync.timer
-  systemctl start offlineimapsync.timer
+
+
   systemctl enable mailclean.timer
   systemctl start mailclean.timer
   systemctl restart $vpn_ser@mail
@@ -796,8 +677,6 @@ EOF
   echo | /a/exe/cedit mail /etc/dnsmasq-servers.conf || [[ $? == 1 ]]
   systemctl reload dnsmasq
 
-  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
@@ -809,27 +688,28 @@ EOF
   # 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 $(hostname -f)
+  cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+dc_eximconfig_configtype='satellite'
+dc_smarthost='$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'
+# Only used in case of bounces.
+dc_localdelivery='maildir_home'
 EOF
+
   hostname -f > /etc/mailname
 
+  # We set this to alerts 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:/d
+EOF
+
 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
+systemctl reload exim4
 
 # 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
@@ -912,10 +792,10 @@ sed -r s/^\\S+:/$b:/ 600_exim4-config_userforward >175_$b
 f=/etc/exim4/passwd.client
 rm -f /etc/exim4/passwd.client
 install -m 640 -g Debian-exim /dev/null $f
-cat /etc/mailpass| while read -r domain port pass; do
+while read -r domain _ pass; do
   # reference: exim4_passwd_client(5)
   printf "%s:%s\n" "$domain" "$pass" >>$f
-done
+done </etc/mailpass
 # end setup passwd.client
 
 # by default, only 10 days of logs are kept. increase that.
@@ -923,19 +803,39 @@ 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
-/^root:/d
-EOF
-  newaliases
-fi
+
+
+# /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:
+
+# local mail that bounces goes to /Maildir or /root/Maildir
+dirs=(/m/md/bounces/{cur,tmp,new})
+mkdir -p ${dirs[@]}
+chown -R $u:Debian-exim /m/md/bounces
+chmod 775 ${dirs[@]}
+usermod -a -G Debian-exim $u
+for d in /Maildir /root/Maildir; do
+  if [[ ! -L $d ]]; then
+    rm -rf $d
+  fi
+  ln -sf -T /m/md/bounces $d
+done
 
 # put spool dir in directory that spans multiple distros.
 # based on http://www.postfix.org/qmgr.8.html and my notes in gnus
@@ -970,14 +870,37 @@ if [[ -e /nocow ]]; then
   fi
 fi
 
+
+
 systemctl restart exim4
 systemctl enable exim4
 
+
+if [[ $HOSTNAME == "$MAIL_HOST" ]]; then
+  f=/usr/local/bin/send-test-forward
+  cat >$f <<'EOF'
+#!/bin/bash
+echo body_test | mail -s "primary_test $(date +%s) $(date +%Y-%m-%dT%H:%M:%S%z)" iank@posteo.de
+EOF
+  chmod +x $f
+
+  cat >/etc/cron.d/mailtest <<EOF
+SHELL=/bin/bash
+# running as user just because no need to run as root
+*/10 * * * *   $u $f
+*/10 * * * *   $u /usr/local/bin/mailtest-check
+*/10 * * * *   root chmod -R g+rw /m/md/bounces
+EOF
+  cp /a/bin/distro-setup/filesystem/usr/local/bin/mailtest-check /usr/local/bin
+else
+  rm -f /etc/cron.d/mailtest
+fi
+
 # 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
+  if [[ $HOSTNAME == "$MAIL_HOST" ]]; then
     systemctl restart radicale
     systemctl enable radicale
     if [[ -e /etc/logrotate.d/radicale.disabled ]]; then