2 # Copyright (C) 2016 Ian Kelling
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
17 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
19 ####### begin perstent password instructions ######
21 # # for hosts which have all private files I just use the same user
22 # # for other hosts, each one get\'s their own password.
23 # # for generating secure pass, and storing for server too:
24 # # user=USUALLY_SAME_AS_HOSTNAME
27 # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
28 # s sed -i "/^$user:/d" /p/c/filesystem/etc/exim4/passwd
29 # echo "$user:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
30 # echo "mail.iankelling.org:$user:$(<$f)" >> /p/c/machine_specific/$user/filesystem/etc/mailpass
31 # # then run this script, or part of it which uses /etc/mailpass
33 # # dovecot password, i just need 1 as I\'m the only user
34 # mkdir /p/c/filesystem/etc/dovecot
35 # echo "ian:$(doveadm pw -s ssha256)::::::" >/p/c/filesystem/etc/dovecot/users
40 # # for ad-hoc testing of some random new host sending mail:
41 # user=li # client host username & hostname
43 # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
44 # s sed -i "/^$user:/d" /etc/exim4/passwd
45 # echo "$user:$(mkpasswd -m sha-512 -s <$f)" | s tee -a /etc/exim4/passwd
46 # echo "mail.iankelling.org:$user:$(<$f)" | ssh root@$user dd of=/etc/exim4/passwd.client
47 ####### end perstent password instructions ######
50 ####### begin persistent dkim/dns instructions #########
51 # # Remove 1 level of comments in this section, set the domain var
52 # # for the domain you are setting up, then run this and copy dns settings
54 # domain=iankelling.org
55 # c /p/c/filesystem/etc/exim4
56 # # this has several bugs addressed in comments, but it was helpful
57 # # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
59 # openssl genrsa -out $domain-private.pem 2048 -outform PEM
60 # openssl rsa -in $domain-private.pem -out $domain.pem -pubout -outform PEM
61 # # selector is needed for having multiple keys for one domain.
62 # # I dun do that, so just use a static one: li
63 # echo "txt record name: li._domainkey.$domain"
64 # # Debadmin page does not have v=, fastmail does, and this
65 # # says it\'s recommended in 3.6.1, default is DKIM1 anyways.
66 # # https://www.ietf.org/rfc/rfc6376.txt
67 # # Join and print all but first and last line.
68 # # last line: swap hold & pattern, remove newlines, print.
69 # # lines 2+: append to hold space
70 # echo "txt record contents:"
71 # echo "v=DKIM1; k=rsa; p=$(sed -n '${x;s/\n//gp};2,$H' $domain.pem)"
72 # chmod 644 $domain.pem
73 # chmod 640 $domain-private.pem
74 # # in conflink, we chown these to group debian
76 # # selector was also put into /etc/exim4/conf.d/main/000_localmacros,
77 # # via the mail-setup scripts
79 # # 2017-02 dmarc policies:
80 # # yahoo: p=reject, hotmail: p=none, gmail: p=none, fastmail none for legacy reasons
81 # # gmail will be changing to p=reject, which is expected to cause problems
82 # # with a few old mailing lists, copying theirs for now.
83 # echo "dmarc dns, name: _dmarc value: v=DMARC1; p=none; rua=mailto:mailauth-reports@$domain"
85 # # 2017-02 spf policies:
86 # # google ~all, hotmail -all, yahoo: ?all, fastmail ?all
87 # # i include fastmail\'s settings, per their instructions,
88 # # and follow their policy. In mail in a box, or similar instructions,
89 # # I\'ve seen recommended to not use a restrictive policy.
90 # echo "spf dns: name is empty, value: v=spf1 a include:spf.messagingengine.com ?all"
92 # # to check if dns has updated, you do
93 # host -a mesmtp._domainkey.$domain
96 # # setting it to iankelling.org would work the same, but this
97 # # is more flexible, I could change where mail.iankelling.org pointed.
99 # mx records, 2 records each, for * and empty domain
100 # pri 10 mail.iankelling.org
101 # pri 20 in1-smtp.messagingengine.com
102 # pri 30 in2-smtp.messagingengine.com
104 ####### end persistent dkim instructions #########
109 # /usr/share/doc/exim4-base/README.Debian.gz
110 # /usr/share/doc/exim4-base/spec.txt.gz
112 # routers, transports, and authenticators are sections, and you define
113 # driver instances in those sections, and the manual calls them driver
114 # types but there is also a more specific "type" of driver, which is specified
115 # with the driver = some_module setting in the driver.
117 # the driver option must precede and private options (options that are
118 # specific to that driver), so follow example of putting it at beginning.
120 # The full list of option settings for any particular driver instance,
121 # including all the defaulted values, can be extracted by making use of
122 # the -bP command line option.
124 # exim clear out message queue. as root:
125 # adapted from somewhere on stackoverflow.
126 # ser stop exim4; sleep 1; exim -bp | exiqgrep -i | xargs exim -Mrm; ser start exim4
128 # fastmail has changed their smtp server, but the old one still works,
129 # I see no reason to bother changing.
130 # New one is smtp.fastmail.com
132 # test delivery & rewrite settings:
133 #exim4 -bt ian@localhost
137 postfix
() { [[ $type == postfix
]]; }
138 exim
() { [[ $type == exim4
]]; }
139 if ! exim
&& ! postfix
; then
140 echo "$1: error: expected exim4 or postfix as first arg"
145 local_mx
=mail.iankelling.org
148 relayhost
="[$host]:25" # postfix
149 smarthost
="$host::25" # exim
152 # this was for when I used the exim config type
153 # "mail sent by smarthost; received via SMTP or fetchmail"
154 # if [[ $HOSTNAME == $MAIL_HOST ]]; then
155 # host=mail.messagingengine.com
156 # relayhost="[$host]:587" # postfix
157 # smarthost="$host::587" # exim
160 forward
=ian@
$local_mx
163 if [[ $HOSTNAME == $MAIL_HOST ]]; then
164 # if we are MAIL_HOST, exim config sets up an /etc/alias from
165 # root to the postmaster, which i config to ian, as long as there
166 # exists an entry for root, or there was no preexisting aliases file.
167 # based on the postinst file.
170 # linode image has a root alias, I think it might override our .forward
171 sudo
sed -i '/^root:/d' /etc
/aliases
174 # background: This also works instead of ~/.forward
175 # s sed -i --follow-symlinks '/^root/d' /etc/aliases ||:
176 #echo "root: $HOSTNAME@$SOME_DOMAIN" | s tee -a /etc/aliases
177 # this can\'t be a symlink and has permission restrictions
178 # it might work in /etc/aliases, but this seems more proper.
179 e
$forward > ~
/.forward
180 e
$forward | s
tee /root
/.forward
181 # 644 is required. shouldn\'t need changing, but set it just in case.
182 s
chmod 644 ~
/.forward
/root
/.forward
185 # offlineimap uses this too, it is much easier to use one location than to
186 # condition it\'s config and postfix\'s config
188 fedora
) s lnf
-T ca-certificates.crt
/etc
/ssl
/ca-bundle.trust.crt
;;
193 # dunno why, but debian installed postfix with builddep emacs
194 # but I will just explicitly install it here since
195 # I use it for sending mail in emacs.
197 s debconf-set-selections
<<EOF
198 postfix postfix/main_mailer_type select Satellite system
199 postfix postfix/mailname string $HOSTNAME
200 postfix postfix/relayhost string $relayhost
206 # Settings from reading the output when installing on debian,
207 # then seeing which were different in a default install on arch.
208 # I assume the same works for fedora.
210 mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
211 mailbox_size_limit = 0
212 relayhost = $relayhost
213 inet_interfaces = loopback-only
216 s systemctl
enable postfix
217 s systemctl start postfix
219 # i\'m assuming mail just won\'t work on systems without the sasl_passwd.
221 smtp_sasl_auth_enable = yes
222 smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
223 smtp_sasl_security_options = noanonymous
224 smtp_tls_security_level = secure
225 message_size_limit = 20480000
226 smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
227 inet_protocols = ipv4
229 # msg_size_limit: I ran into a log file not sending cuz of size. double from 10 to 20 meg limit
230 # inet_protocols: without this, postfix tries an ipv6 lookup then gives
231 # up and fails. snippet from syslog: type=AAAA: Host not found, try again
234 f
=/etc
/postfix
/sasl_passwd
238 s
cat /etc
/mailpass|
while read -r domain port pass
; do
239 # format: domain port user:pass
240 # mailpass is just a name i made up, since postfix and
241 # exim both use a slightly crazy format to translate to
242 # each other, it\'s easier to use my own format.
243 printf "[%s]:%s %s" "$domain" "$port" "${pass/@/#}" | s
tee -a $f >/dev
/null
245 s postmap
hash:/etc
/postfix
/sasl_passwd
246 s service postfix reload
248 else # exim. has debian specific stuff for now
251 # wording of question from dpkg-reconfigure exim4-config
252 # 1. internet site; mail is sent and received directly using SMTP
253 # 2. mail sent by smarthost; received via SMTP or fetchmail
254 # 3. mail sent by smarthost; no local mail
255 # 4. local delivery only; not on a network
256 # 5. no configuration at this time
258 # Note, I have used option 2 in the past for receiving mail
259 # from lan hosts, sending external mail via another smtp server.
261 # Note, other than configtype, we could set all the options in
262 # both types of configs without harm, they would either be
263 # ignored or be disabled by other settings, but the default
264 # local_interfaces definitely makes things more secure.
266 # most of these settings get translated into settings
267 # in /etc/exim4/update-exim4.conf.conf
268 # mailname setting sets /etc/mailname
270 s debconf-set-selections
<<EOF
271 exim4-config exim4/use_split_config boolean true
274 source /a
/bin
/bash_unpublished
/source-semi-priv
275 exim_main_dir
=/etc
/exim
4/conf.d
/main
276 s mkdir
-p exim_main_dir
277 if [[ $HOSTNAME == $MAIL_HOST ]]; then
278 # afaik, these will get ignored, routing to my own machine, but rm
279 # them to make me feel better.
280 s
rm -f ~
/.forward
/root
/.forward
282 s debconf-set-selections
<<EOF
283 # Mail Server configuration
284 # -------------------------
286 # Please select the mail server configuration type that best meets your needs.
288 # Systems with dynamic IP addresses, including dialup systems, should generally be
289 # configured to send outgoing mail to another machine, called a 'smarthost' for
290 # delivery because many receiving systems on the Internet block incoming mail from
291 # dynamic IP addresses as spam protection.
293 # A system with a dynamic IP address can receive its own mail, or local delivery can be
294 # disabled entirely (except mail for root and postmaster).
296 # 1. internet site; mail is sent and received directly using SMTP
297 # 2. mail sent by smarthost; received via SMTP or fetchmail
298 # 3. mail sent by smarthost; no local mail
299 # 4. local delivery only; not on a network
300 # 5. no configuration at this time
302 # General type of mail configuration: 1
303 exim4-config exim4/dc_eximconfig_configtype select internet site; mail is sent and received directly using SMTP
307 # The 'mail name' is the domain name used to 'qualify' mail addresses without a domain
310 # This name will also be used by other programs. It should be the single, fully
311 # qualified domain name (FQDN).
313 # Thus, if a mail address on the local host is foo@example.org, the correct value for
314 # this option would be example.org.
316 # This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
319 exim4-config exim4/mailname string li.iankelling.org
324 # Please enter a semicolon-separated list of recipient domains for which this machine
325 # should consider itself the final destination. These domains are commonly called
326 # 'local domains'. The local hostname (treetowl.lan) and 'localhost' are always added
327 # to the list given here.
329 # By default all local domains will be treated identically. If both a.example and
330 # b.example are local domains, acc@a.example and acc@b.example will be delivered to the
331 # same final destination. If different domain names should be treated differently, it
332 # is necessary to edit the config files afterwards.
334 # Other destinations for which mail is accepted:
335 # iank.bid is for testing
336 # mail.iankelling.org is for machines i own
337 exim4-config exim4/dc_other_hostnames string *.iankelling.org;iankelling.org;*iank.bid;iank.bid;*zroe.org;zroe.org
342 # Please enter a semicolon-separated list of IP addresses. The Exim SMTP listener
343 # daemon will listen on all IP addresses listed here.
345 # An empty value will cause Exim to listen for connections on all available network
348 # If this system only receives mail directly from local services (and not from other
349 # hosts), it is suggested to prohibit external connections to the local Exim daemon.
350 # Such services include e-mail programs (MUAs) which talk to localhost only as well as
351 # fetchmail. External connections are impossible when 127.0.0.1 is entered here, as
352 # this will disable listening on public network interfaces.
354 # IP-addresses to listen on for incoming SMTP connections:
355 exim4-config exim4/dc_local_interfaces string
360 # Mail for the 'postmaster', 'root', and other system accounts needs to be redirected
361 # to the user account of the actual system administrator.
363 # If this value is left empty, such mail will be saved in /var/mail/mail, which is not
366 # Note that postmaster\'s mail should be read on the system to which it is directed,
367 # rather than being forwarded elsewhere, so (at least one of) the users listed here
368 # should not redirect their mail off this machine. A 'real-' prefix can be used to
369 # force local delivery.
371 # Multiple user names need to be separated by spaces.
373 # Root and postmaster mail recipient:
374 exim4-config exim4/dc_postmaster string ian
378 # Exim is able to store locally delivered email in different formats. The most commonly
379 # used ones are mbox and Maildir. mbox uses a single file for the complete mail folder
380 # stored in /var/mail/. With Maildir format every single message is stored in a
381 # separate file in ~/Maildir/.
383 # Please note that most mail tools in Debian expect the local delivery method to be
384 # mbox in their default.
386 # 1. mbox format in /var/mail/ 2. Maildir format in home directory
388 # Delivery method for local mail: 2
389 exim4-config exim4/dc_localdelivery select Maildir format in home directory
391 # MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
392 # smarthost config type, not sure. all other settings
393 # would be unused in that config type.
394 s
dd of
=$exim_main_dir/000_localmacros
2>/dev
/null
<<'EOF'
395 MAIN_TLS_ENABLE = true
401 # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
403 # The file is based on the outgoing domain-name in the from-header.
404 DKIM_DOMAIN = ${lc:${domain:$h_from:}}
406 DKIM_PRIVATE_KEY= ${if exists{/etc/exim4/${dkim_domain}-private.pem} {/etc/exim4/${dkim_domain}-private.pem}}
409 # failing message on mail-tester.com:
410 # We check if there is a server (A Record) behind your hostname treetowl.
411 # You may want to publish a DNS record (A type) for the hostname treetowl or use a different hostname in your mail software
412 # https://serverfault.com/questions/46545/how-do-i-change-exim4s-primary-hostname-on-a-debian-box
413 # and this one seemed appropriate from grepping config
414 MAIN_HARDCODE_PRIMARY_HOSTNAME = li.iankelling.org
416 # normally empty, I set this so I can set the envelope address
417 # when doing mail redelivery to invoke filters
418 MAIN_TRUSTED_GROUPS = ian
420 LOCAL_DELIVERY = dovecot_lmtp
422 CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/rcpt_local_acl
426 s
dd of
=/etc
/systemd
/system
/offlineimapsync.timer
<<'EOF'
428 Description=Run offlineimap-sync once every 5 mins
434 WantedBy=timers.target
437 s
dd of
=/etc
/systemd
/system
/offlineimapsync.service
<<'EOF'
439 Description=Offlineimap sync
440 After=multi-user.target
445 ExecStart=/a/bin/log-quiet/sysd-mail-once offlineimap-sync /a/bin/distro-setup/offlineimap-sync
447 s systemctl daemon-reload
448 s systemctl
enable offlineimapsync.timer
449 s systemctl start offlineimapsync.timer
451 else # $HOSTNAME != $MAIL_HOST
452 s systemctl disable offlineimapsync.timer
&>/dev
/null ||
:
453 s systemctl stop offlineimapsync.timer
&>/dev
/null ||
:
456 # would only exist because I wrote it i the previous condition,
457 # it\'s not part of exim
458 s
rm -f $exim_main_dir/000_localmacros
459 s debconf-set-selections
<<EOF
460 exim4-config exim4/dc_eximconfig_configtype select mail sent by smarthost; no local mail
461 exim4-config exim4/dc_smarthost string $smarthost
465 # if we already have it installed, need to reconfigure, without being prompted
466 if dpkg
-s exim4-config
&>/dev
/null
; then
467 # gotta remove this, otherwise the set-selections are completely
468 # ignored. It woulda been nice if this was documented somewhere!
469 s
rm -f /etc
/exim
4/update-exim4.conf.conf
470 s dpkg-reconfigure
-u -fnoninteractive exim4-config
472 # light version does not have sasl auth support.
473 pi exim4-daemon-heavy spamassassin
475 ##### begin spamassassin config
476 ser
enable spamassassin
478 s
sed -i '/^\s*CRON\s*=/d' /etc
/default
/spamassassin
479 s
tee -a /etc
/default
/spamassassin
<<<CRON=1
480 # just noticed this in the config file, seems like a good idea.
481 s sed -i '/^\s*NICE\s*=/d' /etc/default/spamassassin
482 s tee -a /etc/default/spamassassin <<<'NICE="--nicelevel 15"'
483 ser reload spamassassin
485 s dd of=/etc/systemd/system/spamddnsfix.service <<'EOF'
487 Description=spamd dns bug fix cronjob
491 ExecStart=/a/bin/distro-setup/spamd-dns-fix
493 s dd of=/etc/systemd/system/spamddnsfix.timer <<'EOF'
495 Description=run spamd bug fix script every 10 minutes
499 # the script looks back 9 minutes into the journal,
500 # it takes a second to run,
501 # so lets run every 9 minutes and 10 seconds.
505 WantedBy=timers.target
508 sgo spamddnsfix.timer
510 ##### end spamassassin config
512 gitslink # needed to install the execstart files below
513 s dd of=/etc/systemd/system/mailcert.service <<'EOF'
515 Description=Mail cert rsync
516 After=multi-user.target
520 ExecStart=/usr/local/bin/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
523 s dd of=/etc/systemd/system/mailcert.timer <<'EOF'
525 Description=Run mail-cert once a day
531 WantedBy=timers.target
538 # based on a little google and package search, just the dovecot
539 # packages we need instead of dovecot-common.
541 # dovecot-lmtpd is for exim to deliver to dovecot instead of maildir
542 # directly. The reason to do this is to use dovecot\'s sieve, which
543 # has extensions that allow it to be almost equivalent to exim\'s
544 # filter capabilities, some ways probably better, some worse, and
545 # sieve has the benefit of being supported in postfix and
546 # proprietary/weird environments, so there is more examples on the
547 # internet. I was torn about whether to do this or not, meh.
548 pi dovecot-core dovecot-imapd dovecot-sieve dovecot-lmtpd
550 # if we changed 90-sieve.conf and removed the active part of the
551 # sieve option, we wouldn\'t need this, but I\'d rather not modify a
552 # default config if not needed. This won\'t work as a symlink in /a/c
554 lnf -T sieve/main.sieve ~/.dovecot.sieve
556 # we have a few config files which installing exim/dovecot overwrites,
557 # and might as well have this before reading /etc/mailpass,
558 # which this sets up too.
561 # begin setup passwd.client
562 f=/etc/exim4/passwd.client
566 s chown root:Debian-exim $f
567 # note: this will go away
568 s cat /etc/mailpass| while read -r domain port pass; do
569 # reference: exim4_passwd_client(5)
570 printf "%s:%s\n" "$domain" "$pass" | s tee -a $f >/dev/null
572 # end setup passwd.client
574 # https://blog.dhampir.no/content/make-exim4-on-debian-respect-forward-and-etcaliases-when-using-a-smarthost
575 # i only need .forwards, so just doing that one.
576 cd /etc/exim4/conf.d/router
578 b=${a}_higher_priority
581 # sed to make the router name unique
582 sed -r s/^\\S+:/$b:/ 600_exim4-config_$a | s dd of=$tmp 2>/dev/null
583 if ! diff -q $tmp $of &>/dev/null; then
584 s dd if=$tmp of=$of >/dev/null
596 # based on http://www.postfix.org/qmgr.8.html and my notes in gnus
598 sdir=/var/spool/$type
599 if [[ $(readlink -f $sdir) != $dir ]]; then
601 if [[ ! -e $dir && -d $sdir ]]; then
610 # if I wanted the from address to be renamed and sent to a different address,
611 # echo "sdx@localhost development@localhost" | sudo dd of=/etc/postfix/recipient_canonical
612 # sudo postmap hash:/etc/postfix/recipient_canonical
613 # sudo service postfix reload