#!/bin/bash
# * intro
-# Copyright (C) 2019 Ian Kelling
-# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# Program to install and configure Ian's email related programs
+# Copyright (C) 2024 Ian Kelling
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# todo:
+# on bk (and fsf servers that run multiple exim4 daemons, eg eximfsf2 and eximfsf3),
+# make it so that when exim is restarted due to package upgrades,
+# we also restart those daemons, which can be done like so, based on looking
+# at the prerm and postinst scripts of exim4-daemon-heavy.
+#
+# if [[ ! -e /usr/sbin/invoke-rc.d-diverted ]]; then
+# mv /usr/sbin/invoke-rc.d /usr/sbin/invoke-rc.d-diverted
+# dpkg --divert /usr/sbin/invoke-rc.d-diverted --no-rename /usr/sbin/invoke-rc.d
+# fi
+# /usr/sbin/invoke-rc.d:
+# #!/bin/bash
+# if [[ DPKG_MAINTSCRIPT_PACKAGE == exim4* && $1 == exim4 ]]; then
+# shift
+# ret=0
+# for daemon in exim4 eximfsf2 eximfsf3; do
+# /usr/sbin/invoke-rc.d-diverted $daemon "$@" || ret=$?
+# done
+# else
+# /usr/sbin/invoke-rc.d-diverted "$@"
+# fi
# Things I tend to forget. on MAIL_HOST, daemon runs with /etc/exim4/my.conf,
# due to /etc/default/exim4 containing:
# which has log path
# log_file_path = /var/log/exim4/my%s
#
+# On non bk|MAIL_HOST, the config and log file are all standard.
+#
# eximbackup folder is /bu/md
# it is cleaned up by mail-backup-clean, which is run by btrbk-run
#
#&! testignore|jtuttle|eximbackup|/usr/sbin/exim4 -bpu
+# todo: this message seems to get dropped on the floor, it was due to a missing 2nd colon in
+# condition = ${if def:h_fdate:}
+# Figure out how to avoid this message being discarded.
+
+# 2023-09-12 01:41:43 [722371] 1qfw9f-0031v9-0S <= ian@iankelling.org U=iank P=local S=483 id=87cyyogd7t.fsf@iankelling.org T="iank2" from <ian@iankelling.org> for testignore@amnimal.ninja
+# 2023-09-12 01:41:43 [722373] 1qfw9f-0031v9-0S H=nn.b8.nz [10.173.8.2]: SMTP error from remote mail server after pipelined end of data: 451 Temporary local problem - please try later
+# 2023-09-12 01:41:43 [722372] 1qfw9f-0031v9-0S == testignore@amnimal.ninja R=smarthost T=remote_smtp_smarthost defer (-46) H=nn.b8.nz [10.173.8.2] DT=0s: SMTP error from remote mail server after pipelined end of data: 451 Temporary local problem - please try later
+
# todo: check new macro DKIM_TIMESTAMPS
# todo: check if REMOTE_SMTP_INTERFACE or REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE can simplify my or fsfs config
shopt -s nullglob
-if [[ -s /usr/local/lib/err ]]; then
- source /usr/local/lib/err
-elif [[ -s /a/bin/errhandle/err ]]; then
- source /a/bin/errhandle/err
+if [[ -s /usr/local/lib/bash-bear ]]; then
+ source /usr/local/lib/bash-bear
+elif [[ -s /a/bin/bash-bear-trap/bash-bear ]]; then
+ source /a/bin/bash-bear-trap/bash-bear
else
echo "no err tracing script found"
exit 1
#######
-# * perstent password instructions
-# Note: for cert cron, we need to manually run first to accept known_hosts
+# * perstent password instructions Note: for cert cron, we need to
+# manually run first to accept known_hosts
# # exim passwords:
# # for hosts which have all private files I just use the same user
bhost_t=false
case $HOSTNAME in
$MAIL_HOST) : ;;
- kd|frodo|x2|x3|kw|sy|bo)
+ kd|x2|x3|kw|sy|bo|so)
bhost_t=true
;;
esac
# * clamav
+# old file. remove when all hosts updated, 2023-09-11
+rm -fv /etc/exim4/conf.d/clamav_data_acl
+
m usermod -a -G Debian-exim clamav
u /etc/systemd/system/clamav-daemon.service.d/fix.conf <<EOF
u /etc/spamassassin/mylocal.cf <<'EOF'
# this is mylocal.cf because the normal local.cf has a bunch of upstream stuff i dont want to mess with
+
# /usr/share/doc/exim4-base/README.Debian.gz:
# SpamAssassin's default report should not be used in a add_header
# statement since it contains empty lines. (This triggers e.g. Amavis'
NICE="--nicelevel 15"
CRON=1
EOF
+
+case $HOSTNAME in
+ bk)
+ u /etc/spamassassin/my_thishost.cf <<'EOF'
+# note: these are duplicated in exim config
+# veth0/1 # bk bk_ip6
+internal_networks 10.173.8.1/32 10.173.8.2/32 85.119.83.50/32 2001:ba8:1f1:f0c9::2
+trusted_networks 10.173.8.1/32 10.173.8.2/32 85.119.83.50/32 2001:ba8:1f1:f0c9::2
+EOF
+
+ ;;
+ je)
+ u /etc/spamassassin/my_thishost.cf <<'EOF'
+# note: these are duplicated in exim config
+# veth0/1 # je je_ipv6
+internal_networks 10.173.8.1/32 10.173.8.2/32 85.119.82.128/32 2001:ba8:1f1:f09d::2/128
+trusted_networks 10.173.8.1/32 10.173.8.2/32 85.119.82.128/32 2001:ba8:1f1:f09d::2/128
+EOF
+ ;;
+ *)
+ u /etc/spamassassin/my_thishost.cf <<'EOF'
+# note: these are duplicated in exim config
+# veth0/1 # li li_ip6
+internal_networks 10.173.8.1/32 10.173.8.2/32 72.14.176.105/32 2600:3c00::f03c:91ff:fe6d:baf8/128
+trusted_networks 10.173.8.1/32 10.173.8.2/32 72.14.176.105/32 2600:3c00::f03c:91ff:fe6d:baf8/128
+EOF
+ ;;
+esac
+
##### end spamassassin config
ignoreip = 209.51.188.13 2001:470:142::13 209.51.188.92 2001:470:142:3::10 72.14.176.105 2600:3c00:e000:280::2 10.173.8.1
EOF
if $ur; then
+ # Ensure the log file monitored by fail2ban exists, or else fail2ban can't start.
+ if [[ ! -e /var/log/exim4/mainlog ]]; then
+ install -m 640 -o Debian-exim -g adm /dev/null /var/log/exim4/mainlog
+ fi
m systemctl restart fail2ban
fi
domainlist local_hostnames = ! je.b8.nz : ! bk.b8.nz : *.b8.nz : b8.nz
+# note: most of these are duplicated in spamassassin config
hostlist iank_trusted = <; \
# veth0
10.173.8.1 ; \
# Rules that make receiving more liberal should be on backup hosts
# so that we dont reject mail accepted by MAIL_HOST
LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE = /etc/exim4/conf.d/local_deny_exceptions_acl
+
+acl_not_smtp = acl_check_not_smtp
+
+
+DEBBUGS_DOMAIN = b.b8.nz
+
EOF
if dpkg --compare-versions "$(dpkg-query -f='${Version}\n' --show exim4)" ge 4.94; then
EOF
fi
+cat >/etc/exim4/conf.d/main/30_local <<EOF
+freeze_tell =
+EOF
+
+
rm -fv /etc/exim4/rcpt_local_acl # old path
u /etc/exim4/conf.d/local_deny_exceptions_acl <<'EOF'
# dmarc_status = reject:quarantine
# add_header = Reply-to: dmarctest@iankelling.org
+# This allows us to delay sending an email until a specific time,
+# allowing us time to change our mind and also to appear to have
+# sent the message at a different time. In emacs copy the
+# automcatically date header add an f to make it fdate,
+# and then change the date to whenever you want to send it.
+# In the system-status script, I check once per minute
+# or more if it should be sent.
+
+warn
+ # fdate = future date.
+ condition = ${if def:h_fdate:}
+ remove_header = fdate:
+ remove_header = date:
+ add_header = date: $h_fdate
+ control = freeze
+EOF
+sed -i 's/^freeze_tell =.*/#\0/' /etc/exim4/conf.d/main/02_exim4-config_options
+
+u /etc/exim4/conf.d/acl/41_check_not_smtp <<'EOF'
+# todo: for non MAIL_HOST machines, i'd like
+# to send to the MAIL_HOST without freezing.
+# So, only do this if we are MAIL_HOST.
+
+acl_check_not_smtp:
+warn
+ # fdate = future date.
+ condition = ${if def:h_fdate:}
+ remove_header = fdate:
+ remove_header = date:
+ add_header = Date: $h_fdate
+ control = freeze
+accept
EOF
# plus debug does not help.
# sudo -u radicale radicale -D
- # created password file with:
- # htpasswd -c /p/c/machine_specific/li/filesystem/etc/caldav-htpasswd
+ # created radicale password file with:
+ # htpasswd -c /p/c/machine_specific/li/filesystem/etc/caldav-htpasswd ian
# chmod 640 /p/c/machine_specific/li/filesystem/etc/caldav-htpasswd
# # setup chgrp www-data in ./conflink
ssl = required
# this is the same as the certbot list, i check changes in /a/bin/ds/filesystem/usr/local/bin/check-lets-encrypt-ssl-settings
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
-ssl_protocols = TLSv1.2
+ssl_min_protocol = TLSv1.2
ssl_prefer_server_ciphers = no
protocol lmtp {
# default is just $mail_plugins
mail_plugins = $mail_plugins sieve
}
+
+# /etc/dovecot/conf.d/10-master.conf says the default is 256M.
+# but I started getting oom errors in the syslog
+# Mar 27 15:10:04 sy dovecot[330088]: lmtp(iank)<3839880><gO/BDwtvBGaIlzoA7AdaJQ>: Fatal: master: service(lmtp): child 3839880 returned error 83 (Out of memory (service lmtp { vsz_limit=256 MB }, you may need to increase it) - set CORE_OUTOFMEM=1 environment to get core dump)
+# exim would just queue mail until it eventually succeeded.
+# Deciding what to increase it to, I found this
+# https://dovecot.org/list/dovecot/2011-December/080056.html
+# which suggests 3x the largest dovecot.index.cache file
+# and then I found that
+# md/l/testignore/dovecot.index.cache is 429M, my largest cache file,
+# but that folder only has 2k messages.
+# next biggest is md/l/qemu-devel/dovecot.index.cache 236M
+# which lead to me a search https://doc.dovecot.org/admin_manual/known_issues/large_cache/
+# which suggests 1.5x the maximum cache file size 1G, and
+# that I can safely rm the index.
+default_vsz_limit = 1500M
+
EOF
if dpkg --compare-versions "$(dpkg-query -f='${Version}\n' --show dovecot-core)" ge 1:2.3; then
cat <<EOF
fi
rm -fv /etc/dovecot/conf.d/20-lmtp.conf # file from prev version
+
+ # Having backups of indexes is a waste of space. This also means we
+ # don't send them around with btrbk, I think it is probably
+ # preferable use a bit more cpu to recalculate indexes.
+ install -d -m 700 -o iank -g iank /var/dovecot-indexes
cat >>/etc/dovecot/local.conf <<EOF
+
+
+# This will decrease memory use, and seems likely to decrease cpu & disk
+# use since I rarely use dovecot for most folders.
+mail_cache_max_size = 50M
+
+
# simple password file based login
!include conf.d/auth-passwdfile.conf.ext
# 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
+# https://doc.dovecot.org/configuration_manual/mail_location/Maildir/
+mail_location = maildir:/m/%u:LAYOUT=fs:INBOX=/m/%u/INBOX:INDEX=/var/dovecot-indexes/%u
+# note: i don't know if these need to be set, but this seems fine.
+mail_uid = iank
+mail_gid = iank
protocol lmtp {
# For a normal setup with exim, we need something like this, which
m mkdir -p $rctmpdir /m/rc
m chown -R www-data.www-data $rctmpdir /m/rc
m chmod 750 $rctmpdir
- # Ensure the log file monitored by fail2ban exists, or else fail2ban can't start.
# todo: check for other mailinabox things
+ # Ensure the log file monitored by fail2ban exists, or else fail2ban can't start.
m sudo -u www-data touch $rclogdir/errors.log
#### begin carddav install
u /usr/local/bin/ncup <<'EOFOUTER'
#!/bin/bash
-source /usr/local/lib/err
+source /usr/local/lib/bash-bear
m() { printf "%s\n" "$*"; "$@"; }
err-cleanup() {
fi
+# * debbugs
+
+pi debbugs
+# missing dependency. apache error log:
+# Can't locate List/AllUtils.pm in @INC (you may need to install the List::AllUtils module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.34.0 /usr/local/share/perl/5.34.0 /usr/lib/x86_64-linux-gnu/perl5/5.34 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.34 /usr/share/perl/5.34 /usr/local/lib/site_perl) at /var/lib/debbugs/www/cgi/pkgreport.cgi line 23.
+pi liblist-allutils-perl lynx
+# workarounds for broken debbugsconfig which is
+# itself deprecated. this is temporary before I
+# figure out how to install from git
+if [[ -e /usr/share/doc/debbugs/examples/text.gz ]]; then
+ gunzip /usr/share/doc/debbugs/examples/text.gz
+fi
+mkdir -p /etc/debbugs/indices
+debbugsconfig
+
+
+# ld for local debbugs
+/a/exe/web-conf -l -t -a 127.0.1.1 -p 80 -r /var/lib/debbugs/www - apache2 ld <<'EOF'
+# copied from debbugs upstream example
+<Directory /var/lib/debbugs/www>
+ Options Indexes SymLinksIfOwnerMatch MultiViews
+ DirectoryIndex index.html
+ Require all granted
+</Directory>
+
+ScriptAlias /cgi/ /var/lib/debbugs/www/cgi/
+<Directory "/var/lib/debbugs/www/cgi/">
+ AllowOverride None
+ Options ExecCGI SymLinksIfOwnerMatch
+ Require all granted
+</Directory>
+
+RewriteEngine on
+RewriteCond %{HTTP_USER_AGENT} .*apt-listbugs.*
+RewriteRule .* /apt-listbugs.html [R,L]
+
+# RewriteLog /org/bugs.debian.org/apache-rewrite.log
+# RewriteLogLevel 0
+
+#RewriteRule ^/$ http://www.debian.org/Bugs/
+RewriteRule ^/(robots\.txt|release-critical|apt-listbugs\.html)$ - [L]
+# The following two redirect to up-to-date pages
+RewriteRule ^/[[:space:]]*#?([[:digit:]][[:digit:]][[:digit:]]+)([;&].+)?$ /cgi-bin/bugreport.cgi?bug=$1$2 [L,R,NE]
+RewriteRule ^/([^/+]*)([+])([^/]*)$ "/$1%%{%}2B$3" [N]
+RewriteRule ^/[Ff][Rr][Oo][Mm]:([^/]+\@.+)$ /cgi-bin/pkgreport.cgi?submitter=$1 [PT,NE]
+# Commented out, 'cuz aj says it will crash master. (old master)
+# RewriteRule ^/[Ss][Ee][Vv][Ee][Rr][Ii][Tt][Yy]:([^/]+\@.+)$ /cgi-bin/pkgreport.cgi?severity=$1 [L,R]
+RewriteRule ^/([^/]+\@.+)$ /cgi-bin/pkgreport.cgi?maint=$1 [PT,NE]
+RewriteRule ^/mbox:([[:digit:]][[:digit:]][[:digit:]]+)([;&].+)?$ /cgi-bin/bugreport.cgi?mbox=yes&bug=$1$2 [PT,NE]
+RewriteRule ^/src:([^/]+)$ /cgi-bin/pkgreport.cgi?src=$1 [PT,NE]
+RewriteRule ^/severity:([^/]+)$ /cgi-bin/pkgreport.cgi?severity=$1 [PT,NE]
+RewriteRule ^/tag:([^/]+)$ /cgi-bin/pkgreport.cgi?tag=$1 [PT,NE]
+# RewriteMap fix-chars int:noescape
+RewriteCond %{REQUEST_URI} ^/(Access\.html|Developer\.html|Reporting\.html|server-request\.html|server-control\.html|server-refcard\.html).* [NC]
+RewriteRule .* - [L]
+# PT|passthrough to bugreport.cgi and pkgreport.cgi
+RewriteRule ^/([0-9]+)$ /cgi-bin/bugreport.cgi?bug=$1 [PT,NE]
+RewriteRule ^/([^/]+)$ /cgi-bin/pkgreport.cgi?pkg=$1 [PT,NE]
+EOF
+
+
# * exim host conditional config
# ** exim certs
# which will overwrite any existing file
u /etc/default/exim4 <<'EOF'
QUEUERUNNER='combined'
-QUEUEINTERVAL='30m'
+# note: this is duplicated in brc2, 10m here is -q10m there.
+QUEUEINTERVAL='10m'
COMMONOPTIONS='-C /etc/exim4/my.conf'
UPEX4OPTS='-o /etc/exim4/my.conf'
# i use epanic-clean for alerting if there are bad paniclog entries
dc_relay_nets='defaultnn.b8.nz'
EOF
- # no clamav on je, it has 1.5g memory and clamav uses most of it
- u /etc/exim4/conf.d/clamav_data_acl <<'EOF'
-warn
-!hosts = +iank_trusted
-!authenticated = plain_server:login_server
-condition = ${if def:malware_name}
-remove_header = Subject:
-add_header = Subject: [Clamav warning: $malware_name] $h_subject
-log_message = heuristic malware warning: $malware_name
-EOF
-
- cat >>/etc/exim4/conf.d/main/000_local <<EOF
-# je.b8.nz will run out of memory with freshclam
-av_scanner = clamd:/var/run/clamav/clamd.ctl
-EOF
-
- cat >> /etc/exim4/conf.d/data_local_acl <<'EOF'
-deny
- malware = */defer_ok
- !condition = ${if match {$malware_name}{\N^Heuristic\N}}
- message = This message was detected as possible malware ($malware_name).
-EOF
cat >/etc/exim4/conf.d/main/000_local-nn <<EOF
# MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
debug_print = "R: smarthost for $local_part@$domain"
driver = manualroute
domains = ! +local_domains
-# send most mail through eggs, helps fsfs sender reputation.
+# comment senders to send most mail through eggs, helps fsfs sender reputation.
# uncomment and optionally move to 188 file to send through my own servers again
senders = *@gnu.org
transport = smarthost_dkim
# ** $MAIL_HOST)
$MAIL_HOST)
+ if [[ ! -e /etc/exim4/no-delay-eximids ]]; then
+ install -o iank -g iank <(echo) /etc/exim4/no-delay-eximids
+ fi
+
+ u /etc/exim4/conf.d/transport/30_debbugs <<'EOF'
+debbugs_pipe:
+ debug_print = "T: debbugs_pipe for $local_part@$domain"
+ driver = pipe
+ command = /usr/lib/debbugs/receive
+ return_output
+EOF
+
+
+ # We dont want delays or backups for mail being stored locally.
+ # We could put domain exclusion on other routes, but going for
+ # higher priority instead.
+ u /etc/exim4/conf.d/router/153_debbugs <<'EOF'
+debbugs:
+ debug_print = "R: debbugs for $local_part@$domain"
+ driver = accept
+ transport = debbugs_pipe
+ local_parts = submit : bugs : maintonly : quiet : forwarded : \
+ done : close : request : submitter : control : ^\\d+
+ domains = DEBBUGS_DOMAIN
+
+bounce_debbugs:
+ debug_print = "R: bounce_debbugs for $local_part@$domain"
+ driver = redirect
+ allow_fail
+ data = :fail: Unknown user
+ domains = DEBBUGS_DOMAIN
+EOF
+
+ u /etc/exim4/conf.d/router/155_delay <<'EOF'
+# By default, delay sending email by 30-40 minutes in case I
+# change my mind.
+
+# Note, if we switch mail_host, the next queue run will
+# send the message to mail_host and the delay will be reset.
+# That is fine. I could probably set some header to track
+# the delay but it is not worth it.
+delay_iank:
+ driver = redirect
+ allow_defer
+ data = :defer:
+ # It hasnt been 30 minutes since we received the message.
+ # we can avoid delay by adding the header i: or putting the exim message id into a file,
+ # or pulling "all" into a file.
+ # note, true false at the end just for easier debugging when pasting into a exim -Mset ID -be.
+ condition = ${if and { \
+{< {$tod_epoch} {${eval10:$received_time + 60*30}}} \
+{!def:h_i:} \
+{!bool{${lookup{$message_exim_id}lsearch{/etc/exim4/no-delay-eximids}{true}}}} \
+{!bool{${lookup{all}lsearch{/etc/exim4/no-delay-eximids}{true}}}} \
+} {true}{false}}
+ headers_remove = <; i:
+ domains = ! +local_domains
+ # uncomment for testing delays to jtuttle
+ # local_parts = ! root : ! testignore : ! alerts : ! ian-pager : ! daylert
+ local_parts = ! root : ! testignore : ! alerts : ! jtuttle : ! ian-pager : ! daylert
+ ignore_target_hosts = ROUTER_DNSLOOKUP_IGNORE_TARGET_HOSTS
+EOF
+
u /etc/exim4/conf.d/router/195_dnslookup_vpn <<'EOF'
# copied from /etc/exim4/conf.d/router/200_exim4-config_primary, but
# use vpn transport. lower priority so it overrides the default route.
# note, to test this, i could temporarily allow testignore.
# alerts avoids potential mail loop. root is already
# redirected earlier, so that is just being overly cautious.
-local_parts = ! root : ! testignore : ! alerts
+local_parts = ! root : ! testignore : ! alerts : ! jtuttle : ! ian-pager : ! daylert
unseen = true
errors_to = alerts@iankelling.org
EOF
EOF
+ # ian: save a copy of sent mail. i thought of other ways to do this,
+ # for example, to only save sent mail that is not sent from my mail
+ # client which saves a copy by default, but in the end, it seems
+ # simplest to turn that off. We want to save external mail sent by
+ # smarthosts. However, there is one complication: encrypted
+ # mail. Saving it here just gets us an encrypted copy that we can't
+ # read. Soo, we could bcc ourselves: then we still have the
+ # annoyance that it is encrypted so we can't grep it. Or, we could
+ # hack emacs so that it sends us an unencrypted copy. Turns out that
+ # the emacs function which saves sent email can also send us a
+ # copy. But, then we have 3 copies: the encrypted copy exim saves,
+ # the unencrypted copy exim saves, and the copy emacs saves. Soo,
+ # we can emacs send a copy directly to the sent alias but only when
+ # it is not mail_host, and have the exim condition for redirecting a
+ # copy to the sent alias avoid doing it if it has an emacs user
+ # agent header.
u /etc/exim4/conf.d/router/186_sentarchive_nn <<'EOF'
-# ian: save a copy of sent mail. i thought of other ways to
-# do this, for example, to only save sent mail that is not sent
-# from my mail client which saves a copy by default, but in the
-# end, it seems simplest to turn that off. We want to save
-# external mail sent by smarthosts.
sentarchive_nn:
driver = redirect
domains = ! +local_domains
- condition = ${if !bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}}
+ condition = ${if and {{!bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}} {!match {$h_user-agent:}{emacs}}}}
data = vojdedIdNejyebni@b8.nz
unseen
EOF
# This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
echo iankelling.org > /etc/mailname
+ # mail default domain.
+ u /etc/mailutils.conf <<'EOF'
+address {
+ email-domain iankelling.org;
+};
+EOF
# mail.iankelling.org so local imap clients can connect with tls and
# when they happen to not be local.
## we use this host to monitor MAIL_HOST and host a mail server for someone
bk)
+ # No clamav on je, it has 1.5g memory and clamav uses most of it.
+ #
+ # No clamav on MAIL_HOST because it is just a waste of useful cpu
+ # time and memory when I'm running on an x200, and it takes 30
+ # seconds to shut down.
+
+ cat >>/etc/exim4/conf.d/main/000_local <<EOF
+# je.b8.nz will run out of memory with freshclam
+av_scanner = clamd:/var/run/clamav/clamd.ctl
+EOF
+
+ cat >> /etc/exim4/conf.d/data_local_acl <<'EOF'
+deny
+ malware = */defer_ok
+ !condition = ${if match {$malware_name}{\N^Heuristic\N}}
+ message = This message was detected as possible malware ($malware_name).
+
+warn
+ !hosts = +iank_trusted
+ !authenticated = *
+ condition = ${if def:malware_name}
+ remove_header = Subject:
+ add_header = Subject: [Clamav warning: $malware_name] $h_subject
+ log_message = heuristic malware warning: $malware_name
+
+warn
+ # fdate = future date. # tdate = temporary date.
+ condition = ${if def:h_fdate}
+ remove_header = fdate:
+ add_header = tdate:
+ control = freeze
+EOF
+
/a/exe/cedit nn /etc/hosts <<'EOF' || [[ $? == 1 ]]
10.173.8.2 nn.b8.nz
;;
# ** not MAIL_HOST|bk|je
*)
- # this one should be removed for all non mail hosts, but
+ echo|u /etc/exim4/conf.d/transport/30_debbugs
+ echo|u /etc/exim4/conf.d/router/153_debbugs
+ echo|u /etc/exim4/conf.d/router/155_delay
+ # this one should be removed for all non mail_hosts. note
# bk and je never become mail_host
echo|u /etc/exim4/conf.d/router/195_dnslookup_vpn
echo|u /etc/exim4/conf.d/router/160_backup_redir
echo|u /etc/exim4/conf.d/router/161_backup_redir_nn
echo|u /etc/exim4/conf.d/router/185_sentarchive
echo|u /etc/exim4/conf.d/router/186_sentarchive_nn
+ # Note, in general we could submit to smarthosts on non MAIL_HOST.
+ # however, delayed mail makes this inconvenient, because I
+ # occasionally want to send an email from a non-MAIL_HOST and then
+ # turn off that computer or travel with it so it is disconnected.
+ # It is also probably easier to setup emacs to delay messages, but
+ # that would mean we need to keep emacs running, this is much
+ # nicer.
echo|u /etc/exim4/conf.d/router/188_exim4-config_smarthost
echo|u /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost
echo|u /etc/exim4/conf.d/rcpt_local_acl
echo|u /etc/exim4/conf.d/main/000_local-nn
- echo|u /etc/exim4/conf.d/clamav_data_acl
if $bhost_t; then
EOF
# Bind to wghole to receive mailbackup.
- wgholeip=$(sed -rn 's/^ *Address *= *([^/]+).*/\1/p' /etc/wireguard/wghole.conf)
- cat >>/etc/exim4/update-exim4.conf.conf <<EOF
+ if [[ -e /etc/wireguard/wghole.conf ]]; then
+ wgholeip=$(sed -rn 's/^ *Address *= *([^/]+).*/\1/p' /etc/wireguard/wghole.conf)
+ cat >>/etc/exim4/update-exim4.conf.conf <<EOF
dc_other_hostnames='eximbackup.b8.nz'
dc_local_interfaces='127.0.0.1;::1;$wgholeip'
EOF
+ fi
# wghole & thus exim will fail to start without internet connectivity.
u /etc/systemd/system/exim4.service.d/backup.conf <<'EOF'
driver = redirect
domains = ! +local_domains
senders = <; *@fsf.org ; *@posteo.net
- condition = ${if !bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}}
+ condition = ${if and {{!bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}} {!match {$h_user-agent:}{emacs}}}}
data = vojdedIdNejyebni@b8.nz
unseen
EOF
u /etc/myexim4/conf.d/router/160_backup_redir <<'EOF'
backup_redir:
-driver = redirect
-# i dont email myself from my own machine much, so lets ignore that.
-domains = ! +local_domains
-senders = <; *@fsf.org ; *@posteo.net
-condition = ${if !bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}}
-# b is just an arbirary short string
-data = b@eximbackup.b8.nz
-# note, to test this, i could temporarily allow testignore.
-# alerts avoids potential mail loop.
-local_parts = ! root : ! testignore : ! alerts : ! daylert
-unseen = true
-errors_to = alerts@iankelling.org
+ driver = redirect
+ # i dont email myself from my own machine much, so lets ignore that.
+ domains = ! +local_domains
+ senders = <; *@fsf.org ; *@posteo.net
+ condition = ${if and {{!bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}} {!match {$h_user-agent:}{emacs}}}}
+ # b is just an arbirary short string
+ data = b@eximbackup.b8.nz
+ # note, to test this, i could temporarily allow testignore.
+ # alerts avoids potential mail loop.
+ local_parts = ! root : ! testignore : ! alerts : ! daylert
+ unseen = true
+ errors_to = alerts@iankelling.org
EOF
# for bk, we have a exim4in.service that will do this for us.
m find / /nocow -xdev -path ./var/tmp -prune -o -gid $gid -execdir chgrp -h 608 {} +
fi
+
+# note: example config has a debbugs user,
+# but my exim runs setuid as Debian-exim so it can't switch
+# to another user. Anyways, I'm not exposing this to the
+# internet at this time. If I do, the thing to do would
+# be to use a sudo config (or sudo alternative). This
+# would be how to setup
+
+# IFS=:; read -r _ _ uid _ < <(getent passwd debbugs||:) ||:; unset IFS
+# if [[ ! $uid ]]; then
+# # /a/opt/debbugs/debian/README.mail
+# adduser --uid 610 --system --group --home /o/debbugs \
+ # --no-create-home --disabled-login --force-badname debbugs
+# m find /o/debbugs -xdev -path ./var/tmp -prune -o -uid $uid -execdir chown -h 610 {} +
+# m find /o/debbugs -xdev -path ./var/tmp -prune -o -gid $gid -execdir chgrp -h 610 {} +
+# elif [[ $uid != 610 ]]; then
+# err debbugs exist but is not uid 610: investigate
+# fi
+
# * start / stop services
reifactive dnsmasq nscd
;;
esac
-# optimization, this only needs to run once.
-if [[ ! -e /etc/exim4/fullchain.pem ]]; then
- m /a/bin/ds/mail-cert-cron -1
+# optimization, this only needs to run once. But, if we move to a
+# computer we haven't used much, we need to fetch a fresh cert.
+# Existence check is just to avoid ugly error message from openssl.
+if [[ ! -e /etc/exim4/fullchain.pem ]] || ! openssl x509 -checkend $(( 60 * 60 * 24 * 3 )) -noout -in /etc/exim4/fullchain.pem; then
+ m /a/bin/ds/mail-cert-cron -1 -i
m systemctl --now enable mailcert.timer
fi
else
m systemctl --now enable $vpnser
fi
+ ;;&
+ bk)
if ! systemctl is-active clamav-daemon >/dev/null; then
m systemctl --now enable clamav-daemon
out=$(rsync -aiSAX --chown=root:root --chmod=g-s /a/bin/ds/filesystem/etc/systemd/system/epanicclean.service /etc/systemd/system)
test_to=${test_tos[0]}
for t in ${test_tos[@]:1}; do
+ if [[ $test_from == *@gnu.org && $t == *@gnu.org ]]; then
+ continue
+ fi
test_to+=", $t"
done
case $test_from in
iankelling.org / git / distro-setup / blobdiff