# Copyright (C) 2019 Ian Kelling
# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# shellcheck disable=SC2254 # makes for a lot of unneeded quotes
+
+
+# perusing through /el/mainlog without test messages:
+# &!testignore|jtuttle|
+#
+#&! testignore|jtuttle|eximbackup|/usr/sbin/exim4 -bpu
+
# todo: check new macro DKIM_TIMESTAMPS
# todo: check if REMOTE_SMTP_INTERFACE or REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE can simplify my or fsfs config
elif [[ -s /a/bin/errhandle/err ]]; then
source /a/bin/errhandle/err
else
- err "no err tracing script found"
+ echo "no err tracing script found"
+ exit 1
fi
source /a/bin/distro-functions/src/identify-distros
source /a/bin/distro-functions/src/package-manager-abstractions
if [[ -e /var/local/mail-setup-reload ]]; then
reload=true
fi
-i() { # install file
+u() { # update file. note: duplicated in brc
local tmp tmpdir dest="$1"
local base="${dest##*/}"
local dir="${dest%/*}"
# dest has a directory component
mkdir -p "$dir"
fi
- ir=false # i result
+ ur=false # u result
tmpdir=$(mktemp -d)
cat >$tmpdir/"$base"
tmp=$(rsync -ic $tmpdir/"$base" "$dest")
if [[ $tmp ]]; then
printf "%s\n" "$tmp"
- ir=true
+ ur=true
if [[ $dest == /etc/systemd/system/* ]]; then
touch /var/local/mail-setup-reload
reload=true
done
}
sre() {
+ local enabled
for service; do
m systemctl restart $service
- m systemctl enable $service;
+ # Optimization for exim,
+ # is-enabled: 0m0.015s
+ # enable: 0m0.748s
+ # It is related to this message:
+ # exim4.service is not a native service, redirecting to systemd-sysv-install.
+ # Executing: /lib/systemd/systemd-sysv-install enable exim4
+ enabled=$(systemctl is-enabled $service 2>/dev/null ||:)
+ if [[ $enabled != enabled ]]; then
+ m systemctl enable $service
+ fi
done
}
mailhost() {
# * Mail clean cronjob
-i /etc/systemd/system/mailclean.timer <<'EOF'
+u /etc/systemd/system/mailclean.timer <<'EOF'
[Unit]
Description=Run mailclean daily
WantedBy=timers.target
EOF
-i /etc/systemd/system/mailclean.service <<EOF
+u /etc/systemd/system/mailclean.service <<EOF
[Unit]
Description=Delete and archive old mail files
After=multi-user.target
# * postgrey
-i /etc/default/postgrey <<'EOF'
+u /etc/default/postgrey <<'EOF'
POSTGREY_OPTS="--exim --unix=/var/run/postgrey/postgrey.sock --retry-window=4 --max-age=60"
EOF
m usermod -a -G Debian-exim clamav
-i /etc/systemd/system/clamav-daemon.service.d/fix.conf <<EOF
+u /etc/systemd/system/clamav-daemon.service.d/fix.conf <<EOF
[Service]
ExecStartPre=-/bin/mkdir -p /var/run/clamav
ExecStartPre=/bin/chown clamav /var/run/clamav
case $HOSTNAME in
li) : ;;
*)
- i /etc/systemd/system/wg-quick@wgmail.service.d/override.conf <<EOF
+ u /etc/systemd/system/wg-quick@wgmail.service.d/override.conf <<EOF
[Unit]
Requires=mailnn.service
JoinsNamespaceOf=mailnn.service
# https://selivan.github.io/2017/12/30/systemd-serice-always-restart.html
-i /etc/systemd/system/mailvpn.service <<EOF
+u /etc/systemd/system/mailvpn.service <<EOF
[Unit]
Description=OpenVPN tunnel for mail
After=syslog.target network-online.target mailnn.service
WantedBy=multi-user.target
EOF
-i /etc/systemd/system/mailnnroute.service <<'EOF'
+u /etc/systemd/system/mailnnroute.service <<'EOF'
[Unit]
Description=Network routing for mailnn
After=syslog.target network-online.target mailnn.service
EOF
#
-i /etc/systemd/system/mailnn.service <<'EOF'
+u /etc/systemd/system/mailnn.service <<'EOF'
[Unit]
Description=Network Namespace for mail vpn service that will live forever and cant fail
After=syslog.target network-online.target
WantedBy=multi-user.target
EOF
-i /etc/systemd/system/mailbindwatchdog.service <<EOF
+u /etc/systemd/system/mailbindwatchdog.service <<EOF
[Unit]
Description=Watchdog to restart services relying on systemd-resolved dir
After=syslog.target network-online.target
# If we ever notice this change, chattr +i on it
# trust-ad is used in t10+, glibc 2.31
-i /etc/127.0.0.1-resolv/stub-resolv.conf <<'EOF'
+u /etc/127.0.0.1-resolv/stub-resolv.conf <<'EOF'
nameserver 127.0.0.1
options edns0 trust-ad
EOF
-i /etc/127.0.0.53-resolv/stub-resolv.conf <<'EOF'
+u /etc/127.0.0.53-resolv/stub-resolv.conf <<'EOF'
nameserver 127.0.0.53
options edns0 trust-ad
EOF
-i /etc/10.173.8.1-resolv/stub-resolv.conf <<'EOF'
+u /etc/10.173.8.1-resolv/stub-resolv.conf <<'EOF'
nameserver 10.173.8.1
options edns0 trust-ad
EOF
case $HOSTNAME in
$MAIL_HOST)
# todo, should this be after vpn service
- i /etc/systemd/system/unbound.service.d/nn.conf <<EOF
+ u /etc/systemd/system/unbound.service.d/nn.conf <<EOF
[Unit]
After=mailnn.service
JoinsNamespaceOf=mailnn.service
;;&
$MAIL_HOST|bk)
for unit in ${nn_progs[@]}; do
- i /etc/systemd/system/$unit.service.d/nn.conf <<EOF
+ u /etc/systemd/system/$unit.service.d/nn.conf <<EOF
[Unit]
# Wants appears better than requires because with requires,
# * wghole (another mail vpn)
if $bhost_t; then
- i /etc/systemd/system/wg-quick@wghole.service.d/override.conf <<'EOF'
+ u /etc/systemd/system/wg-quick@wghole.service.d/override.conf <<'EOF'
[Unit]
StartLimitIntervalSec=0
fi
# * spamassassin config
-i /etc/sysctl.d/80-iank-mail.conf <<'EOF'
+u /etc/sysctl.d/80-iank-mail.conf <<'EOF'
# see exim spec
net.netfilter.nf_conntrack_tcp_timeout_close_wait = 120
EOF
-if $ir; then
+if $ur; then
m sysctl -p
fi
-i /etc/spamassassin/mylocal.cf <<'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:
# 2020-10-19 remove old file. remove this when all hosts updated
rm -fv /etc/systemd/system/spamddnsfix.{timer,service}
-i /etc/default/spamassassin <<'EOF'
+u /etc/default/spamassassin <<'EOF'
# defaults plus debugging flags for an issue im having
OPTIONS="--create-prefs --max-children 5 --helper-home-dir"
PIDFILE="/var/run/spamd.pid"
m rsync -aiSAX --chown=root:root --chmod=g-s /a/bin/ds/mail-cert-cron /usr/local/bin
-i /etc/systemd/system/mailcert.service <<'EOF'
+u /etc/systemd/system/mailcert.service <<'EOF'
[Unit]
Description=Mail cert rsync
After=multi-user.target
Type=oneshot
ExecStart=/usr/local/bin/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
EOF
-i /etc/systemd/system/mailcert.timer <<'EOF'
+u /etc/systemd/system/mailcert.timer <<'EOF'
[Unit]
Description=Run mail-cert once a day
# and see someone is banned.
sed 's/^ *before *= *iptables-common.conf/before = iptables-common-exim.conf/' \
- /etc/fail2ban/action.d/iptables-multiport.conf| i /etc/fail2ban/action.d/iptables-exim.conf
-i /etc/fail2ban/action.d/iptables-common-exim.conf <<'EOF'
+ /etc/fail2ban/action.d/iptables-multiport.conf| u /etc/fail2ban/action.d/iptables-exim.conf
+u /etc/fail2ban/action.d/iptables-common-exim.conf <<'EOF'
# iank: same as iptables-common, except iptables is iptables-exim, ip6tables is ip6tables-exim
# Fail2Ban configuration file
iptables = /usr/local/bin/ip6tables-exim <lockingopt>
EOF
-i /etc/fail2ban/jail.d/exim.local <<'EOF'
+u /etc/fail2ban/jail.d/exim.local <<'EOF'
[exim]
enabled = true
port = 25,587
# 10.173.8.1 = non-nn net
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 $ir; then
+if $ur; then
m systemctl restart fail2ban
fi
cat >/etc/exim4/conf.d/retry/17_retry <<'EOF'
# Retry fast for my own domains
-iankelling.org * F,1d,4m;F,14d,1h
-amnimal.ninja * F,1d,4m;F,14d,1h
-expertpathologyreview.com * F,1d,4m;F,14d,1h
-je.b8.nz * F,1d,4m;F,14d,1h
-zroe.org * F,1d,4m;F,14d,1h
-eximbackup.b8.nz * F,1d,4m;F,14d,1h
+iankelling.org * F,1d,1m;F,14d,1h
+amnimal.ninja * F,1d,1m;F,14d,1h
+expertpathologyreview.com * F,1d,1m;F,14d,1h
+je.b8.nz * F,1d,1m;F,14d,1h
+zroe.org * F,1d,1m;F,14d,1h
+eximbackup.b8.nz * F,1d,1m;F,14d,1h
# The spec says the target domain will be used for temporary host errors,
# but i've found that isn't correct, the hostname is required
# at least sometimes.
-nn.b8.nz * F,1d,4m;F,14d,1h
-defaultnn.b8.nz * F,1d,4m;F,14d,1h
-mx.iankelling.org * F,1d,4m;F,14d,1h
-bk.b8.nz * F,1d,4m;F,14d,1h
-eggs.gnu.org * F,1d,4m;F,14d,1h
-fencepost.gnu.org * F,1d,4m;F,14d,1h
+nn.b8.nz * F,1d,1m;F,14d,1h
+defaultnn.b8.nz * F,1d,1m;F,14d,1h
+mx.iankelling.org * F,1d,1m;F,14d,1h
+bk.b8.nz * F,1d,1m;F,14d,1h
+eggs.gnu.org * F,1d,1m;F,14d,1h
+fencepost.gnu.org * F,1d,1m;F,14d,1h
# afaik our retry doesnt need this, but just using everything
-mx.amnimal.ninja * F,1d,4m;F,14d,1h
-mx.expertpathologyreview.com * F,1d,4m;F,14d,1h
+mx.amnimal.ninja * F,1d,1m;F,14d,1h
+mx.expertpathologyreview.com * F,1d,1m;F,14d,1h
mail.fsf.org * F,1d,15m;F,14d,1h
for f in *-private.pem; do
echo ${f%-private.pem}
done
-} | i /etc/exim4/conf.d/my-dkim-domains
-
-if grep -Fq REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS \
- /etc/exim4/conf.d/transport/10_exim4-config_transport-macros; then
- cat >/etc/exim4/conf.d/transport/11_iank <<'EOF'
-# This unsets the default macro defined in on t11 in
-# /etc/exim4/conf.d/transport/10_exim4-config_transport-macros
-# It seems like a very odd choice that this has become
-# the default in t11. Normal smarthost clients use username/password
-# auth. Oh well.
-REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS ==
-EOF
-else
- rm -f /etc/exim4/conf.d/transport/11_iank
-fi
+} | u /etc/exim4/conf.d/my-dkim-domains
+
+rm -f /etc/exim4/conf.d/transport/11_iank
cat >/etc/exim4/conf.d/main/000_local <<'EOF'
MAIN_TLS_ENABLE = true
# require tls connections for all smarthosts
-REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS = *
+REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS = ! nn.b8.nz
+REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS = nn.b8.nz
# debian exim config added this in 2016 or so?
# it's part of the smtp spec, to limit lines to 998 chars
# 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
+# more verbose logs. used to use +all, but made it less for more efficiency.
+MAIN_LOG_SELECTOR = -skip_delivery -tls_cipher -tls_certificate_verified +all_parents +address_rewrite +arguments +deliver_time +pid +queue_time +queue_time_overall +received_recipients +received_sender +return_path_on_delivery +sender_on_delivery +smtp_confirmation +subject
# Based on spec, seems like a good idea to be nice.
smtp_return_error_details = true
# 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
+daemon_smtp_ports = 25 : 587 : 10025
# default of 25, can get stuck when catching up on mail
smtp_accept_max = 400
smtp_accept_reserve = 100
rm -fv /etc/exim4/rcpt_local_acl # old path
-i /etc/exim4/conf.d/local_deny_exceptions_acl <<'EOF'
+u /etc/exim4/conf.d/local_deny_exceptions_acl <<'EOF'
# This acl already exists in rcpt, this just makes it more widespread.
# See the comment there for its rationale. The reason it needs to be
# more widespread is that I've turned on sender verification, but cron
rm -fv /etc/exim4/data_local_acl # old path
-i /etc/exim4/conf.d/data_local_acl <<'EOF'
+u /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 has been changed in newer exim versions. The only thing
# those docs are rather old and I see a 110k spam message
# pretty quickly looking through my spam folder.
-warn
+#warn
!hosts = +iank_trusted
remove_header = X-Spam_score: X-Spam_score_int : X-Spam_bar : X-Spam_report
# old file
-rm -fv /etc/exim4/conf.d/router/880_backup_copy
-
+rm -fv /etc/exim4/conf.d/router/8{8,9}0_backup_copy \
+ /etc/exim4/conf.d/router/865_backup_redir \
+ /etc/exim4/conf.d/router/870_backup_local
# It is important for this to exist everywhere except in MAIL_HOST
# non-nn config. Previously, just had it in the nn-config on MAIL_HOST,
# but that is a problem if we change mail host and still have something
# in the queue which was destined for this router, but hosts were
# unreachable, the routers will be reevaluated on the next retry.
-i /etc/exim4/conf.d/router/890_backup_copy <<EOF
+u /etc/exim4/conf.d/router/170_backup_copy <<EOF
### router/900_exim4-config_local_user
#################################
-# todo, it would be nice backup sent email too,
-# but its not so important, they still exist in my head
-
backup_copy:
driver = manualroute
domains = eximbackup.b8.nz
no_more
EOF
+
# exim4-config transports are the same as default except for
# message_linelength_limit = 2097152
#
# TODO: copy the defaults into their own file, and setup a cronjob so
# that if file.dpkg-dist shows up, and it is different, we get an alert.
-i /etc/exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost <<'EOF'
+u /etc/exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost <<'EOF'
### transport/30_exim4-config_remote_smtp_smarthost
#################################
.endif
EOF
-i /etc/exim4/conf.d/transport/30_exim4-config_remote_smtp <<'EOF'
+u /etc/exim4/conf.d/transport/30_exim4-config_remote_smtp <<'EOF'
### transport/30_exim4-config_remote_smtp
#################################
# This transport is used for delivering messages over SMTP connections.
EOF
-i /etc/exim4/conf.d/transport/30_backup_remote <<'EOF'
+u /etc/exim4/conf.d/transport/30_backup_remote <<'EOF'
backup_remote:
driver = smtp
multi_domain
.endif
EOF
-i /etc/exim4/conf.d/router/900_exim4-config_local_user <<'EOF'
+u /etc/exim4/conf.d/router/900_exim4-config_local_user <<'EOF'
### router/900_exim4-config_local_user
#################################
local_part_suffix = +*
local_part_suffix_optional
EOF
-i /etc/exim4/conf.d/transport/30_exim4-config_dovecot_lmtp <<'EOF'
+u /etc/exim4/conf.d/transport/30_exim4-config_dovecot_lmtp <<'EOF'
dovecot_lmtp:
driver = lmtp
socket = /var/run/dovecot/lmtp
envelope_to_add
EOF
-i /etc/exim4/conf.d/transport/30_remote_smtp_vpn <<'EOF'
+u /etc/exim4/conf.d/transport/30_remote_smtp_vpn <<'EOF'
# same as debians 30_exim4-config_remote_smtp, but
# with interface added at the end.
interface = <; 10.8.0.4 ; 2600:3c00:e002:3800::4
EOF
-i /etc/exim4/conf.d/transport/30_smarthost_dkim <<'EOF'
+u /etc/exim4/conf.d/transport/30_smarthost_dkim <<'EOF'
# ian: this is remote_smtp_smarthost plus the dkim parts from remote_smtp
smarthost_dkim:
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_mailname_in_oh='true'
# # setup chgrp www-data in ./conflink
pi-nostart radicale
+ m usermod -a -G radicale iank
- i /etc/systemd/system/radicale.service.d/override.conf <<EOF
+ u /etc/systemd/system/radicale.service.d/override.conf <<EOF
[Unit]
After=network.target network-online.target mailnn.service $vpnser
done
# https://wiki.dovecot.org/SSL/DovecotConfiguration
- i /etc/dovecot/dhparam <<'EOF'
+ u /etc/dovecot/dhparam <<'EOF'
-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEAoleil6SBxGqQKk7j0y2vV3Oklv6XupZKn7PkPv485QuFeFagifeS
A+Jz6Wquqk5zhGyCu63Hp4wzGs4TyQqoLjkaWL6Ra/Bw3g3ofPEzMGEsV1Qdqde4
auth_mechanisms = plain login
EOF
- i /etc/dovecot/sieve-spam.sieve <<'EOF'
+ u /etc/dovecot/sieve-spam.sieve <<'EOF'
require ["regex", "fileinto", "imap4flags"];
if allof (header :regex "X-Spam-Status" "^Yes") {
}
EOF
- i /etc/dovecot/local.conf.ext <<'EOF'
+ u /etc/dovecot/local.conf.ext <<'EOF'
passdb {
driver = sql
args = /etc/dovecot/dovecot-sql.conf.ext
EOF
- i /etc/dovecot/dovecot-sql.conf.ext <<'EOF'
+ u /etc/dovecot/dovecot-sql.conf.ext <<'EOF'
# from mailinabox
driver = sqlite
# for je and bk, populated the testignore users for the relevant domains
dir=/var/www/autoconfig.$domain/html/mail
m mkdir -p $dir
# taken from mailinabox
- i $dir/config-v1.1.xml <<EOF
+ u $dir/config-v1.1.xml <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<clientConfig version="1.1">
<emailProvider id="$domain">
mkdir -p $myncdir
# copied from debians cronjob
- i /etc/cron.d/$rcbase <<EOF
+ u /etc/cron.d/$rcbase <<EOF
# Roundcube database cleaning: finally removes all records that are
# marked as deleted.
0 5 * * * www-data $rcdir/bin/cleandb.sh >/dev/null
rctmpdir=/var/tmp/$rcbase
rcdb=/m/rc/$rcbase.sqlite
# config from mailinabox
- i $rcdir/config/config.inc.php <<EOF
+ u $rcdir/config/config.inc.php <<EOF
<?php
\$config = array();
# debian creates this for us
# About categories, see https://www.davx5.com/tested-with/nextcloud
# https://github.com/blind-coder/rcmcarddav/blob/master/doc/GROUPS.md
- i $rcdir/plugins/carddav/config.inc.php <<EOF;
+ u $rcdir/plugins/carddav/config.inc.php <<EOF;
<?php
\$prefs['_GLOBAL']['hide_preferences'] = false;
\$prefs['davserver'] = array(
# $rclogdir/errors.log
# todo: consider other settings in
# /a/opt/mailinabox/setup/nextcloud.sh
- i /etc/php/$phpver/cli/conf.d/30-local.ini <<'EOF'
+ u /etc/php/$phpver/cli/conf.d/30-local.ini <<'EOF'
apc.enable_cli = 1
EOF
- i /etc/php/$phpver/fpm/conf.d/30-local.ini <<'EOF'
+ u /etc/php/$phpver/fpm/conf.d/30-local.ini <<'EOF'
date.timezone = "America/New_York"
# for nextcloud
upload_max_filesize = 2000M
m sudo -u www-data php occ app:install $app
fi
done
- i /etc/systemd/system/$ncbase.service <<EOF
+ u /etc/systemd/system/$ncbase.service <<EOF
[Unit]
Description=ncup $ncbase
After=multi-user.target
IOSchedulingClass=idle
CPUSchedulingPolicy=idle
EOF
- i /etc/systemd/system/$ncbase.timer <<EOF
+ u /etc/systemd/system/$ncbase.timer <<EOF
[Unit]
Description=ncup $ncbase timer
WantedBy=timers.target
EOF
systemctl enable --now $ncbase.timer
- i /usr/local/bin/ncup <<'EOFOUTER'
+ u /usr/local/bin/ncup <<'EOFOUTER'
#!/bin/bash
source /usr/local/lib/err
mkdir -p /var/www/cron-errors
chown www-data.www-data /var/www/cron-errors
- i /etc/cron.d/$ncbase <<EOF
+ u /etc/cron.d/$ncbase <<EOF
PATH=/usr/sbin:/sbin:/usr/bin:/bin:/usr/local/bin
SHELL=/bin/bash
# https://docs.nextcloud.com/server/20/admin_manual/configuration_server/background_jobs_configuration.html
domains = +local_domains
!verify = recipient/callout=no_cache
EOF
- i /etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
+ u /etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
dovecot_plain:
driver = dovecot
public_name = PLAIN
;;
esac
if $bhost_t; then
- i /etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
+ u /etc/exim4/conf.d/auth/29_exim4-config_auth <<'EOF'
# from 30_exim4-config_examples
plain_server:
driver = plaintext
# to see the default comments in /etc/default/exim4:
# s update-exim4defaults --force --init
# which will overwrite any existing file
- i /etc/default/exim4 <<'EOF'
+ u /etc/default/exim4 <<'EOF'
QUEUERUNNER='combined'
QUEUEINTERVAL='30m'
COMMONOPTIONS='-C /etc/exim4/my.conf'
# note: the daemon gives up and dies after retrying those 9 times.
# I came upon this by guessing and trial and error.
setcap CAP_NET_BIND_SERVICE+ei /usr/sbin/exim4
- i /etc/exim4/trusted_configs <<'EOF'
+ u /etc/exim4/trusted_configs <<'EOF'
/etc/exim4/my.conf
EOF
;;
*)
# default file
- i /etc/default/exim4 <<'EOF'
+ u /etc/default/exim4 <<'EOF'
QUEUERUNNER='combined'
QUEUEINTERVAL='30m'
EOF
dirs+=($d)
fi
done
- i /etc/systemd/system/exim4.service.d/nonroot.conf <<EOF
+ u /etc/systemd/system/exim4.service.d/nonroot.conf <<EOF
[Service]
# see 56.2 Root privilege in exim spec
AmbientCapabilities=CAP_NET_BIND_SERVICE
# when we get newer systemd
#ProtectDevices=yes
EOF
- i /etc/exim4/conf.d/main/000_local-noroot <<'EOF'
+ u /etc/exim4/conf.d/main/000_local-noroot <<'EOF'
# see 56.2 Root privilege in exim spec
deliver_drop_privilege = true
EOF
mmm_mail4root
)
for f in ${files[@]}; do
- echo "# iank: removed due to running nonroot"|i /etc/exim4/conf.d/router/$f
+ echo "# iank: removed due to running nonroot"|u /etc/exim4/conf.d/router/$f
done
;;
esac
# ** $MAIL_HOST|bk|je)
$MAIL_HOST|bk|je)
- echo|i /etc/exim4/conf.d/router/870_backup_local
+ echo|u /etc/exim4/conf.d/router/165_backup_local
cat >>/etc/exim4/update-exim4.conf.conf <<EOF
# note: some things we don't set that are here by default because they are unused.
# no clamav on je, it has 1.5g memory and clamav uses most of it
- i /etc/exim4/conf.d/clamav_data_acl <<'EOF'
+ u /etc/exim4/conf.d/clamav_data_acl <<'EOF'
warn
!hosts = +iank_trusted
!authenticated = plain_server:login_server
MAIN_TLS_PRIVATEKEY = /etc/exim4/privkey.pem
EOF
- i /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost <<'EOF'
+ u /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost <<'EOF'
gnusmarthost:
debug_print = "R: smarthost for $local_part@$domain"
driver = manualroute
# ** $MAIL_HOST)
$MAIL_HOST)
- i /etc/exim4/conf.d/router/195_dnslookup_vpn <<'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.
# Use this in case our vpn fails, we dont send anything without it.
# which required using a dedicated user, but realized smtp will be
# more reliable and less fuss. If I ever need that again, see the
# history of this file, and bum in brc2.
- i /etc/exim4/conf.d/router/865_backup_redir <<EOF
-backup_redir:
+ u /etc/exim4/conf.d/router/161_backup_redir_nn <<'EOF'
+backup_redir_nn:
driver = redirect
-domains = +local_domains
# b is just an arbirary short string
data = b@eximbackup.b8.nz
+condition = ${if !bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}}
# 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.
# This allows for forwarded mail to not get most rcpt checks, especially SPF,
# which would incorrectly get denied.
- i /etc/exim4/host_local_deny_exceptions <<'EOF'
+ u /etc/exim4/host_local_deny_exceptions <<'EOF'
mail.fsf.org
*.posteo.de
EOF
# case that doesn't work, we still want to accept that mail, but not
# from any host except the smarthosts. local_hostnames and this rule
# is for that purpose.
- i /etc/exim4/conf.d/rcpt_local_acl <<'EOF'
+ u /etc/exim4/conf.d/rcpt_local_acl <<'EOF'
deny
!authenticated = *
domains = +local_hostnames
message = no relay
+
+# for testing bounce behavior
+#deny
+# senders = testlist-bounces+test=zroe.org@fsf.org
+# message = iank-bounce
EOF
- echo|i /etc/exim4/conf.d/router/880_universal_forward
+ echo|u /etc/exim4/conf.d/router/880_universal_forward
cat >>/etc/exim4/conf.d/main/000_local <<EOF
MAILDIR_HOME_MAILDIR_LOCATION = /m/md/Sent
EOF
- # for iank@fsf.org, i have mail.fsf.org forward it to fsf@iankelling.org.
- # and also have mail.iankelling.org whitelisted as a relay domain.
- # I could avoid that if I changed this to submit to 587 with a
- # password like a standard mua.
- i /etc/exim4/conf.d/router/188_exim4-config_smarthost <<'EOF'
+
+ 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:
+sentarchive_nn:
driver = redirect
domains = ! +local_domains
condition = ${if !bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}}
data = vojdedIdNejyebni@b8.nz
unseen
+EOF
+
+ # for iank@fsf.org, i have mail.fsf.org forward it to fsf@iankelling.org.
+ # and also have mail.iankelling.org whitelisted as a relay domain.
+ # I could avoid that if I changed this to submit to 587 with a
+ # password like a standard mua.
+ u /etc/exim4/conf.d/router/188_exim4-config_smarthost <<'EOF'
# ian: copied from /etc/exim4/conf.d/router/200_exim4-config_primary, and added senders = and
# replaced DCsmarthost with hostname
fsfsmarthost:
# man page: is used to build the local_domains list, together with "localhost"
# this is duplicated in a later router.
dc_other_hostnames='iankelling.org;zroe.org;r2e.iankelling.org;mx.iankelling.org;!je.b8.nz;!bk.b8.nz;*.b8.nz;b8.nz'
+dc_relay_nets='defaultnn.b8.nz'
EOF
## we use this host to monitor MAIL_HOST and host a mail server for someone
bk)
- echo|i /etc/exim4/conf.d/rcpt_local_acl
- echo|i /etc/exim4/conf.d/router/880_universal_forward
/a/exe/cedit nn /etc/hosts <<'EOF' || [[ $? == 1 ]]
10.173.8.2 nn.b8.nz
EOF
- sed -r -f - /etc/init.d/exim4 <<'EOF' | i /etc/init.d/exim4in
+ sed -r -f - /etc/init.d/exim4 <<'EOF' |u /etc/init.d/exim4in
s,/etc/default/exim4,/etc/default/exim4in,g
s,/run/exim4/exim.pid,/run/exim4/eximin.pid,g
s,(^[ #]*Provides:).*,\1 exim4in,
s,(^[ #]*NAME=).*,\1"exim4in",
EOF
chmod +x /etc/init.d/exim4in
- i /etc/systemd/system/exim4in.service.d/alwaysrestart.conf <<'EOF'
+ u /etc/systemd/system/exim4in.service.d/alwaysrestart.conf <<'EOF'
[Unit]
# needed to continually restart
StartLimitIntervalSec=0
RestartSec=20
EOF
- i /etc/default/exim4in <<'EOF'
+ u /etc/default/exim4in <<'EOF'
# defaults but no queue runner and alternate config dir
QUEUERUNNER='no'
COMMONOPTIONS='-oP /run/exim4/eximin.pid'
cat >>/etc/exim4/update-exim4.conf.conf <<EOF
dc_other_hostnames='je.b8.nz'
EOF
- echo|i /etc/exim4/conf.d/router/188_exim4-config_smarthost
- echo|i /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost
- echo|i /etc/exim4/conf.d/rcpt_local_acl
- echo|i /etc/exim4/conf.d/router/880_universal_forward
;;
# ** not MAIL_HOST|bk|je
*)
# this one should be removed for all non mail hosts, but
# bk and je never become mail_host
- echo|i /etc/exim4/conf.d/router/195_dnslookup_vpn
-
- echo|i /etc/exim4/conf.d/router/188_exim4-config_smarthost
- echo|i /etc/exim4/conf.d/router/190_exim4-config_fsfsmarthost
- echo|i /etc/exim4/conf.d/rcpt_local_acl
- echo|i /etc/exim4/conf.d/router/865_backup_redir
- echo|i /etc/exim4/conf.d/main/000_local-nn
- echo|i /etc/exim4/conf.d/clamav_data_acl
+ 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
+ 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
fi
# catches things like cronjob email
- i /etc/exim4/conf.d/router/880_universal_forward <<'EOF'
+ u /etc/exim4/conf.d/router/880_universal_forward <<'EOF'
universal_forward:
driver = redirect
domains = +local_domains
if [[ -e /bu/md/cur && $(stat -c %u /bu/md/cur) == 1000 ]]; then
chown -R Debian-exim:Debian-exim /bu/md
fi
- i /etc/exim4/conf.d/transport/30_backup_maildir <<EOF
+ u /etc/exim4/conf.d/transport/30_backup_maildir <<EOF
# modified debian maildir transport
backup_maildir:
driver = appendfile
mode_fail_narrower = false
EOF
- i /etc/exim4/conf.d/router/870_backup_local <<'EOF'
+ u /etc/exim4/conf.d/router/165_backup_local <<'EOF'
### router/900_exim4-config_local_user
#################################
EOF
# wghole & thus exim will fail to start without internet connectivity.
- i /etc/systemd/system/exim4.service.d/backup.conf <<'EOF'
+ u /etc/systemd/system/exim4.service.d/backup.conf <<'EOF'
[Unit]
StartLimitIntervalSec=0
dc_smarthost='$smarthost'
EOF
- hostname -f |i /etc/mailname
+ hostname -f |u /etc/mailname
cat >>/etc/exim4/update-exim4.conf.conf <<EOF
# The manpage incorrectly states this will do header rewriting, but
# that only happens if we have dc_hide_mailname is set.
$MAIL_HOST|bk)
# config for the non-nn exim. note, it uses not default dir, but we
# generate that into the default config file
- m rsync -ra --delete --delete-excluded --exclude=/conf.d/main/000_local-nn --exclude=/conf.d/router/890_backup_copy /etc/exim4/ /etc/myexim4
+ m rsync -ra --delete --delete-excluded \
+ --exclude=/conf.d/router/161_backup_redir_nn \
+ --exclude=/conf.d/router/186_sentarchive_nn \
+ --exclude=/conf.d/main/000_local-nn /etc/exim4/ /etc/myexim4
cat >>/etc/myexim4/conf.d/main/000_local <<'EOF'
# this makes it easier to see which exim is doing what
log_file_path = /var/log/exim4/my%s
bk)
# config for the non-nn exim
- cat >/etc/myexim4/conf.d/main/000_local-nn <<'EOF'
+ cat >>/etc/myexim4/conf.d/main/000_local <<'EOF'
MAIN_HARDCODE_PRIMARY_HOSTNAME = mail2.iankelling.org
EOF
;;
$MAIL_HOST)
+
+
+ u /etc/myexim4/conf.d/router/185_sentarchive <<'EOF'
+sentarchive:
+ driver = redirect
+ domains = ! +local_domains
+ senders = <; *@fsf.org ; *@posteo.net
+ condition = ${if !bool{${lookup{$local_part@$domain}lsearch{/etc/exim4/ignore-sent}{true}}}}
+ 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
+EOF
+
+
+
# for bk, we have a exim4in.service that will do this for us.
m update-exim4.conf -d /etc/myexim4
;;
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
- i /etc/systemd/system/exim4.service.d/override.conf <<'EOF'
+ u /etc/systemd/system/exim4.service.d/override.conf <<'EOF'
[Unit]
# without local-fs on exim, we get these kind of errors in paniclog on shutdown:
# Failed to create spool file /var/spool/exim4//input//1jCLxz-0008V4-V9-D: Permission denied
m systemctl daemon-reload
fi
-# checking bhost_t is redundant, but could help us catch errors.
-if $bhost_t || [[ -e /etc/wireguard/wghole.conf ]]; then
- # todo: in mail-setup, we have a static list of backup hosts, not *y
- m systemctl --now enable wg-quick@wghole
+# optimization, this only needs to run once.
+if [[ ! -e /sys/class/net/wghole ]]; then
+ # checking bhost_t is redundant, but could help us catch errors.
+ if $bhost_t || [[ -e /etc/wireguard/wghole.conf ]]; then
+ # todo: in mail-setup, we have a static list of backup hosts, not *y
+ m systemctl --now enable wg-quick@wghole
+ fi
fi
-sysd-prom-fail-install epanicclean
-m systemctl --now enable epanicclean
+# optimization, this only needs to be run once
+if [[ ! -e /var/lib/prometheus/node-exporter/exim_paniclog.prom ]]; then
+ sysd-prom-fail-install epanicclean
+ m systemctl --now enable epanicclean
+fi
case $HOSTNAME in
je)
;;
esac
-m /a/bin/ds/mail-cert-cron -1
-sre mailcert.timer
+# optimization, this only needs to run once.
+if [[ ! -e /etc/exim4/fullchain.pem ]]; then
+ m /a/bin/ds/mail-cert-cron -1
+ m systemctl --now enable mailcert.timer
+fi
case $HOSTNAME in
$MAIL_HOST|bk)
$MAIL_HOST|bk|je)
# start spamassassin/dovecot before exim.
sre dovecot spamassassin
- # need to wait a bit before restarting exim, else I
- # get a paniclog entry like: spam acl condition: all spamd servers failed
- sleep 3
+ # Wait a bit before restarting exim, else I get a paniclog entry
+ # like: spam acl condition: all spamd servers failed. But I'm tired
+ # of waiting. I'll deal with this some other way.
+ #
+ # sleep 3
m systemctl --now enable mailclean.timer
;;&
$MAIL_HOST)
# note: cronjob "ian" also does some important monitoring
# todo: this will sometimes cause an alert because mailtest-check will run
# before we have setup network namespace and spamassassin
- i /etc/cron.d/mailtest <<EOF
+ u /etc/cron.d/mailtest <<EOF
SHELL=/bin/bash
PATH=/usr/bin:/bin:/usr/local/bin
MAILTO=daylert@iankelling.org
m sudo rsync -ahhi --chown=root:root --chmod=0755 \
/b/ds/mailtest-check /b/ds/check-remote-mailqs /usr/local/bin/
- i /etc/systemd/system/mailtest-check.service <<'EOF'
+ u /etc/systemd/system/mailtest-check.service <<'EOF'
[Unit]
Description=mailtest-check
After=local-fs.target
# Dont put these test messages into the sent folder or else it will
# overwhelm it, plus i dont want to save a copy at all.
# Plus addresses we generally want to ignore.
- i /etc/exim4/ignore-sent <<EOF
+ u /etc/exim4/ignore-sent <<EOF
$(printf "%s\n" ${test_tos[@]})
vojdedIdNejyebni@b8.nz
b@eximbackup.b8.nz