# Copyright (C) 2019 Ian Kelling
# SPDX-License-Identifier: AGPL-3.0-or-later
-# todo: setup a logrotate for /var/log/mymain and mypanic
# todo: setup an alert for bouncing test emails.
# todo: handle errors like this:
# Mar 02 12:44:26 kw systemd[1]: exim4.service: Found left-over process 68210 (exim4) in control group while starting unit. Ignoring.
# Mar 02 12:44:26 kw systemd[1]: This usually indicates unclean termination of a previous run, or service implementation deficiencies.
+#eg: on eggs, on may 1st, ps grep for exim, 2 daemons running. 1 leftover from a month ago
+#Debian-+ 1954 1 0 36231 11560 4 Apr02 ? 00:40:25 /usr/sbin/exim4 -bd -q30m
+#Debian-+ 23058 1954 0 36821 10564 0 20:38 ? 00:00:00 /usr/sbin/exim4 -bd -q30m
# todo: harden dovecot. need to do some research. one way is for it to only listen on a wireguard vpn interface, so only clients that are on the vpn can access it.
# todo: consider hardening cups listening on 0.0.0.0
# todo: stop/disable local apache, and rpc.mountd, and kdeconnect when not in use.
-# todo: check that spamd and unbound only listen locally.
# todo: hosts should only allow external mail that is authed and
# destined for backup route. it is a minor issue since traffic is
# todo: run mailping test after running, or otherwise
# clear out terminal alert
-# todo: on bk, dont send email if mailvpn is not up
-
-# todo: mailtest-check should check on bk too
-
# todo: disable postgrey
# todo: in testforward-check, we should also look
local base="${dest##*/}"
local dir="${dest%/*}"
if [[ $dir != "$base" ]]; then
- mkdir -p ${dest%/*}
+ # dest has a directory component
+ mkdir -p "$dir"
fi
ir=false # i result
tmpdir=$(mktemp -d)
mxhost=mx.iankelling.org
mxport=587
-forward=$u@$mxhost
# old setup. left as comment for example
# mxhost=mail.messagingengine.com
fi
# light version of exim does not have sasl auth support.
+# note: for bitfolk hosts, unbound has important config with conflink.
pi-nostart exim4 exim4-daemon-heavy spamassassin unbound clamav-daemon wireguard
# note: pyzor debian readme says you need to run some initialization command
esac
done
-if ! grep -q "^ncsoft:" /etc/aliases; then
- echo "ncsoft: graceq2323@gmail.com" |m tee -a /etc/aliases
-fi
+. /a/bin/bash_unpublished/priv-mail-setup
m gpasswd -a iank adm #needed for reading logs
cat >/etc/exim4/conf.d/retry/17_retry <<'EOF'
# Retry fast for my own domains
-iankelling.org * F,1d,10m;F,14d,1h
-amnimal.ninja * F,1d,10m;F,14d,1h
-expertpathologyreview.com * F,1d,10m;F,14d,1h
-je.b8.nz * F,1d,10m;F,14d,1h
-zroe.org * F,1d,10m;F,14d,1h
+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
# The spec says the target domain will be used for temporary host errors,
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
+
+# 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
+
+
mail.fsf.org * F,1d,15m;F,14d,1h
EOF
domainlist local_hostnames = ! je.b8.nz : ! bk.b8.nz : *.b8.nz : b8.nz
-hostlist iank_trusted = <; \\
+hostlist iank_trusted = <; \
# veth0
-10.173.8.1 ; \\
+10.173.8.1 ; \
# li li_ip6
-72.14.176.105 ; 2600:3c00::f03c:91ff:fe6d:baf8 ; \\
+72.14.176.105 ; 2600:3c00::f03c:91ff:fe6d:baf8 ; \
# li_vpn_net li_vpn_net_ip6s
-10.8.0.0/24; 2600:3c00:e000:280::/64 ; 2600:3c00:e002:3800::/56 ; \\
+10.8.0.0/24; 2600:3c00:e000:280::/64 ; 2600:3c00:e002:3800::/56 ; \
# bk bk_ip6
-85.119.83.50 ; 2001:ba8:1f1:f0c9::2 ; \\
+85.119.83.50 ; 2001:ba8:1f1:f0c9::2 ; \
# je je_ipv6
-85.119.82.128 ; 2001:ba8:1f1:f09d::2 ; \\
+85.119.82.128 ; 2001:ba8:1f1:f09d::2 ; \
# fsf_mit_net fsf_mit_net_ip6 fsf_net fsf_net_ip6 fsf_office_net
18.4.89.0/24 ; 2603:3005:71a:2e00::/64 ; 209.51.188.0/24 ; 2001:470:142::/48 ; 74.94.156.208/28
} {no}{yes}}
+# 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
+# default of 25, can get stuck when catching up on mail
+smtp_accept_max = 400
+smtp_accept_reserve = 100
+smtp_reserve_hosts = +iank_trusted
+
+# 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
EOF
rm -fv /etc/exim4/rcpt_local_acl # old path
EOF
rm -fv /etc/exim4/data_local_acl # old path
+
i /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
warn
!hosts = +iank_trusted
+ # Smarthosts connect with residential ips and thus get flagged as spam if we do a spam check.
+ !authenticated = plain_server:login_server
condition = ${if < {$message_size}{5000K}}
spam = Debian-exim:true
add_header = X-Spam_score_int: $spam_score_int
add_header = X-Spam_action: $spam_action
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
cat <<'EOF'
# https://ssl-config.mozilla.org
ssl = required
-# this is the same as the certbot list, in my cert cronjob, I check if that has changed upstream.
+# 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_prefer_server_ciphers = no
mail_plugins = $mail_plugins sieve
}
EOF
- if dpkg --compare-versions $(dpkg-query -f='${Version}\n' --show dovecot-core) ge 1:2.3; then
+ if dpkg --compare-versions "$(dpkg-query -f='${Version}\n' --show dovecot-core)" ge 1:2.3; then
cat <<EOF
ssl_dh = </etc/dovecot/dhparam
EOF
CHECK_RCPT_REVERSE_DNS = true
CHECK_MAIL_HELO_ISSUED = 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
-# default of 25, can get stuck when catching up on mail
-smtp_accept_max = 400
-smtp_accept_reserve = 100
-smtp_reserve_hosts = +iank_trusted
-# 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
-LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE = /etc/exim4/conf.d/local_deny_exceptions_acl
+CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/conf.d/rcpt_local_acl
+
# testing dmarc
#dmarc_tld_file = /etc/public_suffix_list.dat
+
EOF
;;&
# this makes it easier to see which exim is doing what
log_file_path = /var/log/exim4/my%s
EOF
+
+ cat >/etc/logrotate.d/myexim <<'EOF'
+/var/log/exim4/mymain /var/log/exim4/myreject {
+ daily
+ missingok
+ rotate 1000
+ delaycompress
+ notifempty
+ nocreate
+}
+/var/log/exim4/mypanic {
+ size 10M
+ missingok
+ rotate 10
+ compress
+ delaycompress
+ notifempty
+ nocreate
+}
+EOF
+
# If we ever wanted to have a separate spool,
# we could do it like this.
# cat >>/etc/exim4/conf.d/main/000_local-nn <<'EOF'
$MAIL_HOST)
# < 2.1 (eg: in t9), uses a different data format which required manual
# migration. dont start if we are running an old version.
- if dpkg --compare-versions $(dpkg -s radicale | awk '$1 == "Version:" { print $2 }') ge 2.1; then
+ if dpkg --compare-versions "$(dpkg -s radicale | awk '$1 == "Version:" { print $2 }')" ge 2.1; then
m systemctl --now enable radicale
fi
;;&
# 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
- cat >/etc/cron.d/mailtest <<EOF
+ i /etc/cron.d/mailtest <<EOF
SHELL=/bin/bash
PATH=/usr/bin:/bin:/usr/local/bin
MAILTO=daylert@iankelling.org
*/5 * * * * $u send-test-forward |& log-once send-test-forward
*/10 * * * * root chmod -R g+rw /m/md/bounces |& log-once -1 bounces-chmod
-*/5 * * * * root timeout 290 mailtest-check slow |& log-once -4 mailtest-check
# if a bounce happened yesterday, dont let it slip through the cracks
8 1 * * * root export MAILTO=alerts@iankelling.org; [[ -s /var/log/exim4/mainlog.1 ]] && awk '\$5 == "**"' /var/log/exim4/mainlog.1
EOF
+
+
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'
+[Unit]
+Description=mailtest-check
+After=local-fs.target
+StartLimitIntervalSec=0
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/mailtest-check slow
+Restart=always
+RestartSec=60
+
+[Install]
+WantedBy=graphical.target
+EOF
+ sysd-prom-fail-install mailtest-check
+ sre mailtest-check
;;&
$MAIL_HOST)
test_froms=(ian@iankelling.org z@zroe.org iank@gnu.org)
EOF
;;&
bk)
- test_froms=(testignore@expertpathologyreview.com testignore@amnimal.ninja)
- test_tos=(testignore@iankelling.org testignore@zroe.org testignore@je.b8.nz)
+ test_froms=(testignore@amnimal.ninja testignore@expertpathologyreview.com)
+ test_tos=(testignore@iankelling.org testignore@je.b8.nz)
+ # We dont need to send from different addresses to the same
+ # address. this breaks down our nice elegant logic of building up
+ # froms and tos , so I just handle expertpath in a special case
+ # below and set the to: to be testignore@zroe.org. If we did sent
+ # that way, it would also mess up our mailtest-check logic that
+ # finds which messages to check.
+ # for example: from testignore@amnimal.ninja to: testignore@iankelling.org testignore@zroe.org
+ # that would become 2 messages and we'd only check 1.
;;&
je)
test_froms=(testignore@je.b8.nz)
test_tos=(testignore@iankelling.org testignore@zroe.org testignore@expertpathologyreview.com testignore@amnimal.ninja)
;;&
$MAIL_HOST|bk|je)
- test_to=${test_tos[0]}
- # dont put these test messages into the sent folder or else it will
+
+ # 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.
- echo $test_to > /etc/exim4/ignore-sent
- for t in ${test_tos[@]:1}; do
- test_to+=", $t"
+ rm -f /etc/exim4/ignore-sent
+ for t in ${test_tos[@]}; do
echo $t >> /etc/exim4/ignore-sent
done
+
cat >/usr/local/bin/send-test-forward <<'EOF'
#!/bin/bash
+# we remove from the queue older than 4.3 minutes since we send every 5 minutes.
olds=(
$(/usr/sbin/exiqgrep -o 260 -i -r '^(testignore@(iankelling\.org|zroe\.org|expertpathologyreview\.com|amnimal\.ninja|je\.b8\.nz)|jtuttle@gnu\.org)$')
)
fi
EOF
for test_from in ${test_froms[@]}; do
+
+ test_to=${test_tos[0]}
+ for t in ${test_tos[@]:1}; do
+ test_to+=", $t"
+ done
+ case $test_from in
+ testignore@expertpathologyreview.com)
+ test_to=testignore@zroe.org
+ ;;
+ esac
+
cat >>/usr/local/bin/send-test-forward <<EOFOUTER
/usr/sbin/exim -f $test_from -t <<EOF
From: $test_from
m chmod +x /usr/local/bin/send-test-forward
;;
*)
- rm -fv /etc/cron.d/mailtest
+ soff mailtest-check.service
+ rm -fv /etc/cron.d/mailtest \
+ /var/lib/prometheus/node-exporter/mailtest-check.prom* \
+ /var/local/cron-errors/check-remote-mailqs*
;;
esac
iankelling.org / git / distro-setup / blobdiff