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 [[ $EUID == 0 ]] ||
exec sudo
-E "$BASH_SOURCE" "$@"
23 Usage: ${0##*/} exim4|postfix
24 Setup exim4 / postfix / dovecot
26 The minimal assumption we have is that /etc/mailpass exists
28 -h|--help Print help and exit.
34 postfix
() { [[ $type == postfix
]]; }
35 exim
() { [[ $type == exim4
]]; }
37 if ! exim
&& ! postfix
; then
41 if [[ ! $SUDO_USER ]]; then
42 echo "$0: error: requires running as nonroot or sudo"
47 ####### begin perstent password instructions ######
49 # # for hosts which have all private files I just use the same user
50 # # for other hosts, each one get\'s their own password.
51 # # for generating secure pass, and storing for server too:
52 # # user=USUALLY_SAME_AS_HOSTNAME
55 # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
56 # s sed -i "/^$user:/d" /p/c/filesystem/etc/exim4/passwd
57 # echo "$user:$(mkpasswd -m sha-512 -s <$f)" >>/p/c/filesystem/etc/exim4/passwd
58 # echo "mail.iankelling.org:$user:$(<$f)" >> /p/c/machine_specific/$user/filesystem/etc/mailpass
59 # # then run this script, or part of it which uses /etc/mailpass
61 # # dovecot password, i just need 1 as I\'m the only user
62 # mkdir /p/c/filesystem/etc/dovecot
63 # echo "ian:$(doveadm pw -s ssha256)::::::" >/p/c/filesystem/etc/dovecot/users
68 # # for ad-hoc testing of some random new host sending mail:
69 # user=li # client host username & hostname
71 # apg -m 50 -x 70 -n 1 -a 1 -M CLN >$f
72 # s sed -i "/^$user:/d" /etc/exim4/passwd
73 # echo "$user:$(mkpasswd -m sha-512 -s <$f)" | s tee -a /etc/exim4/passwd
74 # echo "mail.iankelling.org:$user:$(<$f)" | ssh root@$user dd of=/etc/exim4/passwd.client
75 ####### end perstent password instructions ######
78 ####### begin persistent dkim/dns instructions #########
79 # # Remove 1 level of comments in this section, set the domain var
80 # # for the domain you are setting up, then run this and copy dns settings
82 # domain=iankelling.org
83 # c /p/c/filesystem/etc/exim4
84 # # this has several bugs addressed in comments, but it was helpful
85 # # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
87 # openssl genrsa -out $domain-private.pem 2048 -outform PEM
88 # openssl rsa -in $domain-private.pem -out $domain.pem -pubout -outform PEM
89 # # selector is needed for having multiple keys for one domain.
90 # # I dun do that, so just use a static one: li
91 # echo "txt record name: li._domainkey.$domain"
92 # # Debadmin page does not have v=, fastmail does, and this
93 # # says it\'s recommended in 3.6.1, default is DKIM1 anyways.
94 # # https://www.ietf.org/rfc/rfc6376.txt
95 # # Join and print all but first and last line.
96 # # last line: swap hold & pattern, remove newlines, print.
97 # # lines 2+: append to hold space
98 # echo "txt record contents:"
99 # echo "v=DKIM1; k=rsa; p=$(sed -n '${x;s/\n//gp};2,$H' $domain.pem)"
100 # chmod 644 $domain.pem
101 # chmod 640 $domain-private.pem
102 # # in conflink, we chown these to group debian
104 # # selector was also put into /etc/exim4/conf.d/main/000_localmacros,
105 # # via the mail-setup scripts
107 # # 2017-02 dmarc policies:
108 # # host -t txt _dmarc.gmail.com
109 # # yahoo: p=reject, hotmail: p=none, gmail: p=none, fastmail none for legacy reasons
110 # # there were articles claiming gmail would be changing
111 # # to p=reject, in early 2017, which didn't happen. I see no sources on them. It's
112 # # expected to cause problems
113 # # with a few old mailing lists, copying theirs for now.
115 # echo "dmarc dns, name: _dmarc value: v=DMARC1; p=none; rua=mailto:mailauth-reports@$domain"
117 # # 2017-02 spf policies:
118 # # google ~all, hotmail -all, yahoo: ?all, fastmail ?all
119 # # i include fastmail\'s settings, per their instructions,
120 # # and follow their policy. In mail in a box, or similar instructions,
121 # # I\'ve seen recommended to not use a restrictive policy.
122 # echo "spf dns: name is empty, value: v=spf1 a include:spf.messagingengine.com ?all"
124 # # to check if dns has updated, you do
125 # host -a mesmtp._domainkey.$domain
128 # # setting it to iankelling.org would work the same, but this
129 # # is more flexible, I could change where mail.iankelling.org pointed.
131 # mx records, 2 records each, for * and empty domain
132 # pri 10 mail.iankelling.org
133 # pri 20 in1-smtp.messagingengine.com
134 # pri 30 in2-smtp.messagingengine.com
136 ####### end persistent dkim instructions #########
141 # /usr/share/doc/exim4-base/README.Debian.gz
142 # /usr/share/doc/exim4-base/spec.txt.gz
144 # routers, transports, and authenticators are sections, and you define
145 # driver instances in those sections, and the manual calls them driver
146 # types but there is also a more specific "type" of driver, which is specified
147 # with the driver = some_module setting in the driver.
149 # the driver option must precede and private options (options that are
150 # specific to that driver), so follow example of putting it at beginning.
152 # The full list of option settings for any particular driver instance,
153 # including all the defaulted values, can be extracted by making use of
154 # the -bP command line option.
155 # exim -bP config_file to see what config file it used
156 # exim -bP config to see
158 # exim clear out message queue. as root:
159 # adapted from somewhere on stackoverflow.
160 # ser stop exim4; sleep 1; exim -bp | exiqgrep -i | xargs exim -Mrm; ser start exim4
162 # fastmail has changed their smtp server, but the old one still works,
163 # I see no reason to bother changing.
164 # New one is smtp.fastmail.com
166 # test delivery & rewrite settings:
167 #exim4 -bt iank@localhost
174 postconf
-ev "${MAPFILE[@]}"
176 e
() { printf "%s\n" "$*"; }
179 mxhost
=mail.iankelling.org
183 # old setup. left as comment for example
184 # mxhost=mail.messagingengine.com
186 # forward=ian@iankelling.org
188 relayhost
="[$mxhost]:$mxport" # postfix
189 smarthost
="$mxhost::$mxport" # exim
191 vpn_ser
=openvpn-client
192 if [[ ! -e /lib
/systemd
/system
/openvpn-client@.service
]]; then
196 if [[ $HOSTNAME == $MAIL_HOST ]]; then
197 # afaik, these will get ignored because they are routing to my own
198 # machine, but rm them is safer
199 rm -f $
(eval echo ~
$postmaster)/.forward
/root
/.forward
201 # this can\'t be a symlink and has permission restrictions
202 # it might work in /etc/aliases, but this seems more proper.
203 install -m 644 {-o,-g}$postmaster <(e
$forward) $
(eval echo ~
$postmaster)/.forward
206 # offlineimap uses this too, it is much easier to use one location than to
207 # condition it\'s config and postfix\'s config
208 if [[ -f /etc
/fedora-release
]]; then
209 /a
/exe
/lnf
-T ca-certificates.crt
/etc
/ssl
/ca-bundle.trust.crt
213 # dunno why, but debian installed postfix with builddep emacs
214 # but I will just explicitly install it here since
215 # I use it for sending mail in emacs.
216 if command -v apt-get
&> /dev
/null
; then
217 debconf-set-selections
<<EOF
218 postfix postfix/main_mailer_type select Satellite system
219 postfix postfix/mailname string $HOSTNAME
220 postfix postfix/relayhost string $relayhost
221 postfix postfix/root_address string $postmaster
223 if dpkg
-s postfix
&>/dev
/null
; then
224 dpkg-reconfigure
-u -fnoninteractive postfix
226 apt-get
-y install --purge --auto-remove postfix
229 source /a
/bin
/distro-functions
/src
/package-manager-abstractions
231 # Settings from reading the output when installing on debian,
232 # then seeing which were different in a default install on arch.
233 # I assume the same works for fedora.
235 mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
236 mailbox_size_limit = 0
237 relayhost = $relayhost
238 inet_interfaces = loopback-only
241 systemctl
enable postfix
242 systemctl start postfix
244 # i\'m assuming mail just won\'t work on systems without the sasl_passwd.
246 smtp_sasl_auth_enable = yes
247 smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
248 smtp_sasl_security_options = noanonymous
249 smtp_tls_security_level = secure
250 message_size_limit = 20480000
251 smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
252 inet_protocols = ipv4
254 # msg_size_limit: I ran into a log file not sending cuz of size. double from 10 to 20 meg limit
255 # inet_protocols: without this, I've had postfix try an ipv6 lookup then gives
256 # up and fail forever. snippet from syslog: type=AAAA: Host not found, try again
259 f
=/etc
/postfix
/sasl_passwd
260 install -m 600 /dev
/null
$f
261 cat /etc
/mailpass|
while read -r domain port pass
; do
262 # format: domain port user:pass
263 # mailpass is just a name i made up, since postfix and
264 # exim both use a slightly crazy format to translate to
265 # each other, it\'s easier to use my own format.
266 printf "[%s]:%s %s" "$domain" "$port" "${pass/@/#}" >>$f
268 postmap
hash:/etc
/postfix
/sasl_passwd
269 # need restart instead of reload when changing
271 service postfix restart
273 else # begin exim. has debian specific stuff for now
275 if ! dpkg
-s openvpn
&>/dev
/null
; then
276 apt-get
-y install --purge --auto-remove openvpn
279 if [[ -e /p
/c
/filesystem
]]; then
280 /a
/exe
/vpn-mk-client-cert
-b mail -n mail li
283 cat >/etc
/systemd
/system
/mailroute.service
<<EOF
285 # this unit is configured to start and stop whenever $vpn_ser@mail.service
287 Description=Routing for email vpn
289 BindsTo=$vpn_ser@mail.service
290 After=$vpn_ser@mail.service
294 ExecStart=/a/bin/distro-setup/mail-route start
295 ExecStop=/a/bin/distro-setup/mail-route stop
299 RequiredBy=$vpn_ser@mail.service
302 cat >/etc
/systemd
/system
/offlineimapsync.timer
<<'EOF'
304 Description=Run offlineimap-sync once every 5 mins
310 WantedBy=timers.target
313 cat >/etc
/systemd
/system
/offlineimapsync.service
<<EOF
315 Description=Offlineimap sync
316 After=multi-user.target
321 ExecStart=/a/bin/log-quiet/sysd-mail-once offlineimap-sync /a/bin/distro-setup/offlineimap-sync
323 systemctl daemon-reload
324 systemctl
enable mailroute
326 # wording of question from dpkg-reconfigure exim4-config
327 # 1. internet site; mail is sent and received directly using SMTP
328 # 2. mail sent by smarthost; received via SMTP or fetchmail
329 # 3. mail sent by smarthost; no local mail
330 # 4. local delivery only; not on a network
331 # 5. no configuration at this time
333 # Note, I have used option 2 in the past for receiving mail
334 # from lan hosts, sending external mail via another smtp server.
336 # Note, other than configtype, we could set all the options in
337 # both types of configs without harm, they would either be
338 # ignored or be disabled by other settings, but the default
339 # local_interfaces definitely makes things more secure.
341 # most of these settings get translated into settings
342 # in /etc/exim4/update-exim4.conf.conf
343 # mailname setting sets /etc/mailname
345 debconf-set-selections
<<EOF
346 exim4-config exim4/use_split_config boolean true
349 source /a
/bin
/bash_unpublished
/source-semi-priv
350 exim_main_dir
=/etc
/exim
4/conf.d
/main
351 mkdir
-p $exim_main_dir
354 if [[ $HOSTNAME == $MAIL_HOST ]]; then
356 debconf-set-selections
<<EOF
357 # Mail Server configuration
358 # -------------------------
360 # Please select the mail server configuration type that best meets your needs.
362 # Systems with dynamic IP addresses, including dialup systems, should generally be
363 # configured to send outgoing mail to another machine, called a 'smarthost' for
364 # delivery because many receiving systems on the Internet block incoming mail from
365 # dynamic IP addresses as spam protection.
367 # A system with a dynamic IP address can receive its own mail, or local delivery can be
368 # disabled entirely (except mail for root and postmaster).
370 # 1. internet site; mail is sent and received directly using SMTP
371 # 2. mail sent by smarthost; received via SMTP or fetchmail
372 # 3. mail sent by smarthost; no local mail
373 # 4. local delivery only; not on a network
374 # 5. no configuration at this time
376 # General type of mail configuration: 1
377 exim4-config exim4/dc_eximconfig_configtype select internet site; mail is sent and received directly using SMTP
381 # The 'mail name' is the domain name used to 'qualify' mail addresses without a domain
384 # This name will also be used by other programs. It should be the single, fully
385 # qualified domain name (FQDN).
387 # Thus, if a mail address on the local host is foo@example.org, the correct value for
388 # this option would be example.org.
390 # This name won\'t appear on From: lines of outgoing messages if rewriting is enabled.
393 exim4-config exim4/mailname string li.iankelling.org
398 # Please enter a semicolon-separated list of recipient domains for which this machine
399 # should consider itself the final destination. These domains are commonly called
400 # 'local domains'. The local hostname (treetowl.lan) and 'localhost' are always added
401 # to the list given here.
403 # By default all local domains will be treated identically. If both a.example and
404 # b.example are local domains, acc@a.example and acc@b.example will be delivered to the
405 # same final destination. If different domain names should be treated differently, it
406 # is necessary to edit the config files afterwards.
408 # Other destinations for which mail is accepted:
409 # iank.bid is for testing
410 # mail.iankelling.org is for machines i own
411 exim4-config exim4/dc_other_hostnames string *.iankelling.org;iankelling.org;*iank.bid;iank.bid;*zroe.org;zroe.org
416 # Please enter a semicolon-separated list of IP addresses. The Exim SMTP listener
417 # daemon will listen on all IP addresses listed here.
419 # An empty value will cause Exim to listen for connections on all available network
422 # If this system only receives mail directly from local services (and not from other
423 # hosts), it is suggested to prohibit external connections to the local Exim daemon.
424 # Such services include e-mail programs (MUAs) which talk to localhost only as well as
425 # fetchmail. External connections are impossible when 127.0.0.1 is entered here, as
426 # this will disable listening on public network interfaces.
428 # IP-addresses to listen on for incoming SMTP connections:
429 exim4-config exim4/dc_local_interfaces string
434 # Mail for the 'postmaster', 'root', and other system accounts needs to be redirected
435 # to the user account of the actual system administrator.
437 # If this value is left empty, such mail will be saved in /var/mail/mail, which is not
440 # Note that postmaster\'s mail should be read on the system to which it is directed,
441 # rather than being forwarded elsewhere, so (at least one of) the users listed here
442 # should not redirect their mail off this machine. A 'real-' prefix can be used to
443 # force local delivery.
445 # Multiple user names need to be separated by spaces.
447 # Root and postmaster mail recipient:
448 exim4-config exim4/dc_postmaster string $postmaster
452 # Exim is able to store locally delivered email in different formats. The most commonly
453 # used ones are mbox and Maildir. mbox uses a single file for the complete mail folder
454 # stored in /var/mail/. With Maildir format every single message is stored in a
455 # separate file in ~/Maildir/.
457 # Please note that most mail tools in Debian expect the local delivery method to be
458 # mbox in their default.
460 # 1. mbox format in /var/mail/ 2. Maildir format in home directory
462 # Delivery method for local mail: 2
463 exim4-config exim4/dc_localdelivery select Maildir format in home directory
465 # MAIN_HARDCODE_PRIMARY_HOSTNAME might mess up the
466 # smarthost config type, not sure. all other settings
467 # would be unused in that config type.
468 cat >$exim_main_dir/000_localmacros
<<EOF
469 MAIN_TLS_ENABLE = true
475 # https://debian-administration.org/article/718/DKIM-signing_outgoing_mail_with_exim4
477 # The file is based on the outgoing domain-name in the from-header.
478 DKIM_DOMAIN = \${lc:\${domain:\$h_from:}}
480 DKIM_PRIVATE_KEY= \${if exists{/etc/exim4/\${dkim_domain}-private.pem} {/etc/exim4/\${dkim_domain}-private.pem}}
483 # failing message on mail-tester.com:
484 # We check if there is a server (A Record) behind your hostname treetowl.
485 # You may want to publish a DNS record (A type) for the hostname treetowl or use a different hostname in your mail software
486 # https://serverfault.com/questions/46545/how-do-i-change-exim4s-primary-hostname-on-a-debian-box
487 # and this one seemed appropriate from grepping config
488 MAIN_HARDCODE_PRIMARY_HOSTNAME = li.iankelling.org
490 # normally empty, I set this so I can set the envelope address
491 # when doing mail redelivery to invoke filters
492 MAIN_TRUSTED_GROUPS = $u
494 LOCAL_DELIVERY = dovecot_lmtp
496 # options exim has to avoid having to alter the default config files
497 CHECK_RCPT_LOCAL_ACL_FILE = /etc/exim4/rcpt_local_acl
498 CHECK_DATA_LOCAL_ACL_FILE = /etc/exim4/data_local_acl
500 # debian exim config added this in 2016 or so?
501 # it's part of the smtp spec, to limit lines to 998 chars
502 # but a fair amount of legit mail does not adhere to it. I don't think
503 # this should be default, like it says in
504 # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=828801
505 # todo: the bug for introducing this was about headers, but
506 # the fix maybe is for all lines? one says gmail rejects, the
507 # other says gmail does not reject. figure out and open a new bug.
508 IGNORE_SMTP_LINE_LENGTH_LIMIT = true
512 ####### begin dovecot setup ########
513 # based on a little google and package search, just the dovecot
514 # packages we need instead of dovecot-common.
516 # dovecot-lmtpd is for exim to deliver to dovecot instead of maildir
517 # directly. The reason to do this is to use dovecot\'s sieve, which
518 # has extensions that allow it to be almost equivalent to exim\'s
519 # filter capabilities, some ways probably better, some worse, and
520 # sieve has the benefit of being supported in postfix and
521 # proprietary/weird environments, so there is more examples on the
522 # internet. I was torn about whether to do this or not, meh.
523 apt-get
-y install --purge --auto-remove \
524 dovecot-core dovecot-imapd dovecot-sieve dovecot-lmtpd
526 # if we changed 90-sieve.conf and removed the active part of the
527 # sieve option, we wouldn\'t need this, but I\'d rather not modify a
528 # default config if not needed. This won\'t work as a symlink in /a/c
530 sudo
-u $postmaster /a
/exe
/lnf
-T sieve
/main.sieve $
(eval echo ~
$postmaster)/.dovecot.sieve
532 sed -ri -f - /etc
/dovecot
/conf.d
/10-mail.conf
<<'EOF'
533 1i mail_location = maildir:/m/md:LAYOUT=fs:INBOX=/m/md/INBOX
534 /^\s*mail_location\s*=/d
537 cat >/etc
/dovecot
/conf.d
/20-lmtp.conf
<<'EOF'
539 #per https://wiki2.dovecot.org/Pigeonhole/Sieve/Configuration
540 mail_plugins = $mail_plugins sieve
542 #mail_plugins = $mail_plugins
544 # For a normal setup with exim, we need something like this, which
545 # removes the domain part
546 # auth_username_format = %Ln
548 # or else # Exim says something like
549 # "LMTP error after RCPT ... 550 ... User doesn't exist someuser@somedomain"
550 # Dovecot verbose log says something like
551 # "auth-worker(9048): passwd(someuser@somedomain): unknown user"
552 # reference: http://wiki.dovecot.org/LMTP/Exim
554 # However, I use this to direct all mail to the same inbox.
555 # A normal way to do this, which I did at first is to have
556 # a router in exim almost at the end, eg 950,
558 # debug_print = "R: catchall for $local_part@$domain"
560 # domains = +local_domains
563 # http://blog.alteholz.eu/2015/04/exim4-and-catchall-email-address/
564 # with superflous options removed.
565 # However, this causes the envelope to be rewritten,
566 # which makes filtering into mailboxes a little less robust or more complicated,
567 # so I've done it this way instead. it also requires
568 # modifying the local router in exim.
569 auth_username_format = ian
575 cat >/etc
/dovecot
/local.conf
<<'EOF'
576 # so I can use a different login that my shell login for mail. this is
577 # worth doing solely for the reason that if this login is compromised,
578 # it won't also compromise my shell password.
579 !include conf.d/auth-passwdfile.conf.ext
581 # settings derived from wiki and 10-ssl.conf
583 ssl_cert = </etc/exim4/exim.crt
584 ssl_key = </etc/exim4/exim.key
585 # https://github.com/certbot/certbot/raw/master/certbot-apache/certbot_apache/options-ssl-apache.conf
586 # in my cert cronjob, I check if that has changed upstream.
587 ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
589 # ian: added this, more secure, per google etc
590 ssl_prefer_server_ciphers = yes
592 # for debugging info, uncomment these.
593 # logs go to syslog and to /var/log/mail.log
597 ####### end dovecot setup ########
600 systemctl
enable offlineimapsync.timer
601 systemctl start offlineimapsync.timer
602 systemctl restart
$vpn_ser@
mail
603 systemctl
enable $vpn_ser@
mail
604 systemctl
enable dovecot
605 systemctl restart dovecot
607 else # $HOSTNAME != $MAIL_HOST
608 systemctl disable offlineimapsync.timer
&>/dev
/null ||
:
609 systemctl stop offlineimapsync.timer
&>/dev
/null ||
:
610 systemctl disable
$vpn_ser@
mail
611 systemctl stop
$vpn_ser@
mail
612 systemctl disable dovecot ||
:
613 systemctl stop dovecot ||
:
616 # would only exist because I wrote it i the previous condition,
617 # it\'s not part of exim
618 rm -f $exim_main_dir/000_localmacros
619 debconf-set-selections
<<EOF
620 exim4-config exim4/dc_eximconfig_configtype select mail sent by smarthost; no local mail
621 exim4-config exim4/dc_smarthost string $smarthost
624 fi # end $HOSTNAME != $MAIL_HOST
626 # if we already have it installed, need to reconfigure, without being prompted
627 if dpkg
-s exim4-config
&>/dev
/null
; then
628 # gotta remove this, otherwise the set-selections are completely
629 # ignored. It woulda been nice if this was documented somewhere!
630 rm -f /etc
/exim
4/update-exim4.conf.conf
631 dpkg-reconfigure
-u -fnoninteractive exim4-config
633 # light version of exim does not have sasl auth support.
634 apt-get
-y install --purge --auto-remove exim4-daemon-heavy spamassassin
639 ##### begin spamassassin config
640 systemctl
enable spamassassin
642 sed -i '/^\s*CRON\s*=/d' /etc
/default
/spamassassin
643 e CRON
=1 >>/etc
/default
/spamassassin
644 # just noticed this in the config file, seems like a good idea.
645 sed -i '/^\s*NICE\s*=/d' /etc
/default
/spamassassin
646 e
'NICE="--nicelevel 15"' >>/etc
/default
/spamassassin
647 systemctl start spamassassin
648 systemctl reload spamassassin
650 cat >/etc
/systemd
/system
/spamddnsfix.service
<<'EOF'
652 Description=spamd dns bug fix cronjob
656 ExecStart=/a/bin/distro-setup/spamd-dns-fix
658 # 2017-09, debian closed the bug on this saying upstream had fixed it.
659 # remove this when i'm using the newer package, ie, debian 10, or maybe
661 cat >/etc
/systemd
/system
/spamddnsfix.timer
<<'EOF'
663 Description=run spamd bug fix script every 10 minutes
667 # the script looks back 9 minutes into the journal,
668 # it takes a second to run,
669 # so lets run every 9 minutes and 10 seconds.
673 WantedBy=timers.target
675 systemctl daemon-reload
676 systemctl restart spamddnsfix.timer
677 systemctl
enable spamddnsfix.timer
679 ##### end spamassassin config
682 f
=/usr
/local
/bin
/mail-cert-cron
685 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
687 [[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
689 f=/a/bin/bash_unpublished/source-semi-priv
693 if [[ $HOSTNAME == $MAIL_HOST ]]; then
694 local_mx=mail.iankelling.org
695 rsync_common="rsync -ogtL --chown=root:Debian-exim --chmod=640 root@li:/etc/letsencrypt/live/$local_mx/"
696 ${rsync_common}fullchain.pem /etc/exim4/exim.crt
697 ${rsync_common}privkey.pem /etc/exim4/exim.key
702 cat >/etc
/systemd
/system
/mailcert.service
<<'EOF'
704 Description=Mail cert rsync
705 After=multi-user.target
709 ExecStart=/a/bin/log-quiet/sysd-mail-once mailcert /usr/local/bin/mail-cert-cron
712 cat >/etc
/systemd
/system
/mailcert.timer
<<'EOF'
714 Description=Run mail-cert once a day
720 WantedBy=timers.target
722 systemctl daemon-reload
723 systemctl start mailcert
724 systemctl restart mailcert.timer
725 systemctl
enable mailcert.timer
732 cat >/etc
/exim
4/rcpt_local_acl
<<'EOF'
733 # Only hosts we control send to mail.iankelling.org, so make sure
734 # they are all authed.
735 # Note, if we wanted authed senders for all domains,
736 # we could make this condition in acl_check_mail
738 message = ian trusted domain recepient but no auth
740 domains = mail.iankelling.org
742 cat >/etc
/exim
4/data_local_acl
<<'EOF'
743 # Except for the "condition =", this was
744 # a comment in the check_data acl. The comment about this not
745 # being suitable is mostly bs. The only thing related I found was to
746 # add the condition =, cuz spamassassin has problems with big
747 # messages and spammers don't bother with big messages,
748 # but I've increased the size from 10k
749 # suggested in official docs, and 100k in the wiki example because
750 # those docs are rather old and I see a 110k spam message
751 # pretty quickly looking through my spam folder.
753 condition = ${if < {$message_size}{2000K}}
754 spam = Debian-exim:true
755 add_header = X-Spam_score: $spam_score\n\
756 X-Spam_score_int: $spam_score_int\n\
757 X-Spam_bar: $spam_bar\n\
758 X-Spam_report: $spam_report
761 cat >/etc
/exim
4/conf.d
/auth
/29_exim4-config_auth
<<'EOF'
762 # from 30_exim4-config_examples
767 server_condition = "${if crypteq{$auth3}{${extract{1}{:}{${lookup{$auth2}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}"
768 server_set_id = $auth2
770 .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS
771 server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}}
775 cat >/etc
/exim
4/conf.d
/router
/900_exim4-config_local_user
<<'EOF'
776 ### router/900_exim4-config_local_user
777 #################################
779 # This router matches local user mailboxes. If the router fails, the error
780 # message is "Unknown user".
783 debug_print = "R: local_user for $local_part@$domain"
785 domains = +local_domains
786 # ian: commented this, in conjunction with a dovecot lmtp
787 # change so I get mail for all users.
790 transport = LOCAL_DELIVERY
791 cannot_route_message = Unknown user
793 cat >/etc
/exim
4/conf.d
/transport
/30_exim4-config_dovecot_lmtp
<<'EOF'
796 socket = /var/run/dovecot/lmtp
797 #maximum number of deliveries per batch, default 1
802 # begin setup passwd.client
803 f
=/etc
/exim
4/passwd.client
804 rm -f /etc
/exim
4/passwd.client
805 install -m 640 -g Debian-exim
/dev
/null
$f
806 cat /etc
/mailpass|
while read -r domain port pass
; do
807 # reference: exim4_passwd_client(5)
808 printf "%s:%s\n" "$domain" "$pass" >>$f
810 # end setup passwd.client
812 # https://blog.dhampir.no/content/make-exim4-on-debian-respect-forward-and-etcaliases-when-using-a-smarthost
813 # i only need .forwards, so just doing that one.
814 cd /etc
/exim
4/conf.d
/router
815 b
=userforward_higher_priority
816 # replace the router name so it is unique
817 sed -r s
/^
\\S
+:/$b:/ 600_exim4-config_userforward
>175_
$b
818 systemctl restart exim4
822 # /etc/alias setup is debian specific, and
823 # exim config sets up an /etc/alias from root to the postmaster, which i
824 # config to ian, as long as there exists an entry for root, or there was
825 # no preexisting aliases file. based on the postinst file. postfix
826 # won't set up a root to $postmaster alias if it's already installed.
827 # Since postfix is not the greatest, just set it ourselves.
828 if [[ $postmaster != root
]]; then
829 sed -i --follow-symlinks -f - /etc
/aliases
<<EOF
830 \$a root: $postmaster
836 # put spool dir in directory that spans multiple distros.
837 # based on http://www.postfix.org/qmgr.8.html and my notes in gnus
839 # todo: I'm suspicious of uids for Debian-exim being the same across
840 # distros. It would be good to test this.
842 sdir
=/var
/spool
/$type
843 # we only do this if our system has $dir
844 if [[ -e $dir && $
(readlink
-f $sdir) != $dir ]]; then
846 if [[ ! -e $dir && -d $sdir ]]; then
849 /a
/exe
/lnf
-T $dir $sdir
852 systemctl restart
$type
853 systemctl
enable $type
855 # MAIL_HOST also does radicale, and easier to start and stop it here
856 # for when MAIL_HOST changes, so radicale gets the synced files and
857 # does not stop us from remounting /o.
858 if dpkg
-s radicale
&>/dev
/null
; then
859 if [[ $HOSTNAME == $MAIL_HOST ]]; then
860 systemctl restart radicale
861 systemctl
enable radicale
863 systemctl stop radicale
864 systemctl disable radicale
868 # if I wanted the from address to be renamed and sent to a different address,
869 # echo "sdx@localhost development@localhost" | sudo dd of=/etc/postfix/recipient_canonical
870 # sudo postmap hash:/etc/postfix/recipient_canonical
871 # sudo service postfix reload