1 { lib, pkgs, config, nodes, ... }:
3 config = lib.mkIf config.myServices.mail.enable {
4 services.duplyBackup.profiles.mail.excludeFile = ''
9 dest = "postfix/mysql_alias_maps";
10 user = config.services.postfix.user;
11 group = config.services.postfix.group;
14 # We need to specify that option to trigger ssl connection
16 user = ${config.myEnv.mail.postfix.mysql.user}
17 password = ${config.myEnv.mail.postfix.mysql.password}
18 hosts = unix:${config.myEnv.mail.postfix.mysql.socket}
19 dbname = ${config.myEnv.mail.postfix.mysql.database}
20 query = SELECT DISTINCT destination
23 ((regex = 1 AND '%s' REGEXP CONCAT('^',source,'$') ) OR (regex = 0 AND source = '%s'))
28 FROM forwardings_blacklisted
31 SELECT 'devnull@immae.eu'
32 FROM forwardings_blacklisted
37 dest = "postfix/mysql_mailbox_maps";
38 user = config.services.postfix.user;
39 group = config.services.postfix.group;
42 # We need to specify that option to trigger ssl connection
44 user = ${config.myEnv.mail.postfix.mysql.user}
45 password = ${config.myEnv.mail.postfix.mysql.password}
46 hosts = unix:${config.myEnv.mail.postfix.mysql.socket}
47 dbname = ${config.myEnv.mail.postfix.mysql.database}
48 result_format = /%d/%u
49 query = SELECT DISTINCT '%s'
53 (domain = '%d' AND user = '%u' AND regex = 0)
56 AND '%d' REGEXP CONCAT('^',domain,'$')
57 AND '%u' REGEXP CONCAT('^',user,'$')
64 dest = "postfix/mysql_sender_login_maps";
65 user = config.services.postfix.user;
66 group = config.services.postfix.group;
69 # We need to specify that option to trigger ssl connection
71 user = ${config.myEnv.mail.postfix.mysql.user}
72 password = ${config.myEnv.mail.postfix.mysql.password}
73 hosts = unix:${config.myEnv.mail.postfix.mysql.socket}
74 dbname = ${config.myEnv.mail.postfix.mysql.database}
75 query = SELECT DISTINCT destination
79 (regex = 1 AND CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d') REGEXP CONCAT('^',source,'$') )
81 (regex = 0 AND source = CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d'))
84 UNION SELECT CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d') AS destination
88 dest = "postfix/mysql_sender_relays_maps";
89 user = config.services.postfix.user;
90 group = config.services.postfix.group;
93 # We need to specify that option to trigger ssl connection
95 user = ${config.myEnv.mail.postfix.mysql.user}
96 password = ${config.myEnv.mail.postfix.mysql.password}
97 hosts = unix:${config.myEnv.mail.postfix.mysql.socket}
98 dbname = ${config.myEnv.mail.postfix.mysql.database}
99 # INSERT INTO sender_relays
100 # (`from`, owner, relay, login, password, regex, active)
102 # ( 'sender@otherhost.org'
103 # , 'me@mail.immae.eu'
104 # , '[otherhost.org]:587'
106 # , AES_ENCRYPT('otherhostpassword', '${config.myEnv.mail.postfix.mysql.password_encrypt}')
110 query = SELECT DISTINCT `owner`
113 ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s'))
118 dest = "postfix/mysql_sender_relays_hosts";
119 user = config.services.postfix.user;
120 group = config.services.postfix.group;
121 permissions = "0440";
123 # We need to specify that option to trigger ssl connection
124 tls_ciphers = TLSv1.2
125 user = ${config.myEnv.mail.postfix.mysql.user}
126 password = ${config.myEnv.mail.postfix.mysql.password}
127 hosts = unix:${config.myEnv.mail.postfix.mysql.socket}
128 dbname = ${config.myEnv.mail.postfix.mysql.database}
130 query = SELECT DISTINCT relay
133 ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s'))
138 dest = "postfix/mysql_sender_relays_creds";
139 user = config.services.postfix.user;
140 group = config.services.postfix.group;
141 permissions = "0440";
143 # We need to specify that option to trigger ssl connection
144 tls_ciphers = TLSv1.2
145 user = ${config.myEnv.mail.postfix.mysql.user}
146 password = ${config.myEnv.mail.postfix.mysql.password}
147 hosts = unix:${config.myEnv.mail.postfix.mysql.socket}
148 dbname = ${config.myEnv.mail.postfix.mysql.database}
150 query = SELECT DISTINCT CONCAT(`login`, ':', AES_DECRYPT(`password`, '${config.myEnv.mail.postfix.mysql.password_encrypt}'))
153 ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s'))
158 dest = "postfix/ldap_ejabberd_users_immae_fr";
159 user = config.services.postfix.user;
160 group = config.services.postfix.group;
161 permissions = "0440";
163 server_host = ldaps://${config.myEnv.jabber.ldap.host}:636
164 search_base = ${config.myEnv.jabber.ldap.base}
165 query_filter = ${config.myEnv.jabber.postfix_user_filter}
167 bind_dn = ${config.myEnv.jabber.ldap.dn}
168 bind_pw = ${config.myEnv.jabber.ldap.password}
169 result_attribute = immaeXmppUid
170 result_format = ejabberd@localhost
176 networking.firewall.allowedTCPPorts = [ 25 465 587 ];
178 users.users."${config.services.postfix.user}".extraGroups = [ "keys" ];
179 services.filesWatcher.postfix = {
182 config.secrets.fullPaths."postfix/mysql_alias_maps"
183 config.secrets.fullPaths."postfix/mysql_mailbox_maps"
184 config.secrets.fullPaths."postfix/mysql_sender_login_maps"
185 config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"
190 toScript = name: script: pkgs.writeScript name ''
191 #! ${pkgs.stdenv.shell}
192 mail=$(${pkgs.coreutils}/bin/cat -)
193 output=$(echo "$mail" | ${script} 2>&1)
196 if [ "$ret" != "0" ]; then
198 | ${pkgs.procmail}/bin/formail -i "X-Return-Code: $ret" \
199 | /run/wrappers/bin/sendmail -i scripts_error+${name}@mail.immae.eu
201 messageId=$(echo "$mail" | ${pkgs.procmail}/bin/formail -x "Message-Id:")
202 repeat=$(echo "$mail" | ${pkgs.procmail}/bin/formail -X "From:" -X "Received:")
204 ${pkgs.coreutils}/bin/cat <<EOF | /run/wrappers/bin/sendmail -i scripts_error+${name}@mail.immae.eu
206 To: scripts_error+${name}@mail.immae.eu
207 Subject: Log from script error
208 Content-Type: text/plain; charset="UTF-8"
209 Content-Transfer-Encoding: 8bit
210 References:$messageId
222 scripts = lib.attrsets.mapAttrs (n: v:
223 toScript n (pkgs.callPackage (builtins.fetchGit { url = v.src.url; ref = "master"; rev = v.src.rev; }) { scriptEnv = v.env; })
224 ) config.myEnv.mail.scripts // {
225 testmail = pkgs.writeScript "testmail" ''
226 #! ${pkgs.stdenv.shell}
227 ${pkgs.coreutils}/bin/touch \
228 "/var/lib/naemon/checks/email/$(${pkgs.procmail}/bin/formail -x To: | ${pkgs.coreutils}/bin/tr -d ' <>')"
231 in builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList (n: v: ''${n}: "|${v}"'') scripts);
234 name = n: i: "relay_${n}_${toString i}";
235 pair = n: i: m: lib.attrsets.nameValuePair (name n i) (
237 then pkgs.writeText (name n i) m.content
240 pairs = n: v: lib.imap1 (i: m: pair n i m) v.recipient_maps;
241 in lib.attrsets.filterAttrs (k: v: v != null) (
242 lib.attrsets.listToAttrs (lib.flatten (
243 lib.attrsets.mapAttrsToList pairs config.myEnv.mail.postfix.backup_domains
246 relay_restrictions = lib.attrsets.filterAttrs (k: v: v != null) (
247 lib.attrsets.mapAttrs' (n: v:
248 lib.attrsets.nameValuePair "recipient_access_${n}" (
249 if lib.attrsets.hasAttr "relay_restrictions" v
250 then pkgs.writeText "recipient_access_${n}" v.relay_restrictions
253 ) config.myEnv.mail.postfix.backup_domains
257 cfg = config.myEnv.monitoring.email_check.eldiron;
258 address = "${cfg.mail_address}@${cfg.mail_domain}";
259 in pkgs.writeText "postfix-virtual" (
260 builtins.concatStringsSep "\n" (
261 ["${address} testmail@localhost"] ++
262 lib.attrsets.mapAttrsToList (
263 n: v: lib.optionalString v.external ''
264 script_${n}@mail.immae.eu ${n}@localhost, scripts@mail.immae.eu
266 ) config.myEnv.mail.scripts
271 host_sender_login = with lib.attrsets; let
272 addresses = zipAttrs (lib.flatten (mapAttrsToList
273 (n: v: (map (e: { "${e}" = "${n}@immae.eu"; }) v.emails)) config.myEnv.servers));
274 joined = builtins.concatStringsSep ",";
275 in pkgs.writeText "host-sender-login"
276 (builtins.concatStringsSep "\n" (mapAttrsToList (n: v: "${n} ${joined v}") addresses));
277 host_dummy_mailboxes = pkgs.writeText "host-virtual-mailbox"
278 (builtins.concatStringsSep "\n" (["immae-eu@immae.eu dummy"] ++ lib.attrsets.mapAttrsToList (n: v: "${n}@immae.eu dummy") nodes));
281 recipient_maps // relay_restrictions // virtual_map // sasl_access;
283 ### postfix module overrides
284 readme_directory = "${pkgs.postfix}/share/postfix/doc";
285 smtp_tls_CAfile = lib.mkForce "";
286 smtp_tls_cert_file = lib.mkForce "";
287 smtp_tls_key_file = lib.mkForce "";
289 message_size_limit = "1073741824"; # Don't put 0 here, it's not equivalent to "unlimited"
290 mailbox_size_limit = "1073741825"; # Workaround, local delivered mails should all go through scripts
291 alias_database = "\$alias_maps";
293 ### Virtual mailboxes config
294 virtual_alias_maps = [
295 "hash:/etc/postfix/virtual"
296 "mysql:${config.secrets.fullPaths."postfix/mysql_alias_maps"}"
297 "ldap:${config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"}"
299 virtual_mailbox_domains = config.myEnv.mail.postfix.additional_mailbox_domains
300 ++ lib.remove null (lib.flatten (map
303 then "${e.domain}${lib.optionalString (e.domain != "") "."}${zone.name}"
306 (zone.withEmail or [])
308 config.myEnv.dns.masterZones
310 virtual_mailbox_maps = [
311 "hash:/etc/postfix/host_dummy_mailboxes"
312 "mysql:${config.secrets.fullPaths."postfix/mysql_mailbox_maps"}"
314 dovecot_destination_recipient_limit = "1";
315 virtual_transport = "dovecot";
318 relay_domains = lib.flatten (lib.attrsets.mapAttrsToList (n: v: v.domains or []) config.myEnv.mail.postfix.backup_domains);
319 relay_recipient_maps = lib.flatten (lib.attrsets.mapAttrsToList (n: v:
320 lib.imap1 (i: m: "${m.type}:/etc/postfix/relay_${n}_${toString i}") v.recipient_maps
321 ) config.myEnv.mail.postfix.backup_domains);
322 smtpd_relay_restrictions = [
323 "defer_unauth_destination"
324 ] ++ lib.flatten (lib.attrsets.mapAttrsToList (n: v:
325 if lib.attrsets.hasAttr "relay_restrictions" v
326 then [ "check_recipient_access hash:/etc/postfix/recipient_access_${n}" ]
328 ) config.myEnv.mail.postfix.backup_domains);
330 ### Additional smtpd configuration
331 smtpd_tls_received_header = "yes";
332 smtpd_tls_loglevel = "1";
334 ### Email sending configuration
335 smtp_tls_security_level = "may";
336 smtp_tls_loglevel = "1";
338 ### Force ip bind for smtp
339 smtp_bind_address = config.hostEnv.ips.main.ip4;
340 smtp_bind_address6 = builtins.head config.hostEnv.ips.main.ip6;
342 # Use some relays when authorized senders are not myself
343 smtp_sasl_mechanism_filter = "plain,login"; # GSSAPI Not correctly supported by postfix
344 smtp_sasl_auth_enable = "yes";
345 smtp_sasl_password_maps =
346 "mysql:${config.secrets.fullPaths."postfix/mysql_sender_relays_creds"}";
347 smtp_sasl_security_options = "noanonymous";
348 smtp_sender_dependent_authentication = "yes";
349 sender_dependent_relayhost_maps =
350 "mysql:${config.secrets.fullPaths."postfix/mysql_sender_relays_hosts"}";
352 ### opendkim, opendmarc, openarc milters
353 non_smtpd_milters = [
354 "unix:${config.myServices.mail.milters.sockets.opendkim}"
357 "unix:${config.myServices.mail.milters.sockets.opendkim}"
358 "unix:${config.myServices.mail.milters.sockets.openarc}"
359 "unix:${config.myServices.mail.milters.sockets.opendmarc}"
363 smtpd_use_tls = true;
364 smtpd_tls_chain_files = builtins.concatStringsSep "," [ "/var/lib/acme/mail/full.pem" "/var/lib/acme/mail-rsa/full.pem" ];
366 maximal_queue_lifetime = "6w";
367 bounce_queue_lifetime = "6w";
371 enableSubmission = true;
372 submissionOptions = {
373 # Don’t use "long form", only commas (cf
374 # http://www.postfix.org/master.5.html long form is not handled
375 # well by the submission function)
376 smtpd_tls_security_level = "encrypt";
377 smtpd_sasl_auth_enable = "yes";
378 smtpd_tls_auth_only = "yes";
379 smtpd_sasl_tls_security_options = "noanonymous";
380 smtpd_sasl_type = "dovecot";
381 smtpd_sasl_path = "private/auth";
382 smtpd_reject_unlisted_recipient = "no";
383 smtpd_client_restrictions = "permit_sasl_authenticated,reject";
384 smtpd_relay_restrictions = "permit_sasl_authenticated,reject";
385 # Refuse to send e-mails with a From that is not handled
386 smtpd_sender_restrictions =
387 "reject_sender_login_mismatch,reject_unlisted_sender,permit_sasl_authenticated,reject";
388 smtpd_sender_login_maps = builtins.concatStringsSep "," [
389 "hash:/etc/postfix/host_sender_login"
390 "mysql:${config.secrets.fullPaths."postfix/mysql_sender_relays_maps"}"
391 "mysql:${config.secrets.fullPaths."postfix/mysql_sender_login_maps"}"
393 smtpd_recipient_restrictions = "permit_sasl_authenticated,reject";
394 milter_macro_daemon_name = "ORIGINATING";
395 smtpd_milters = builtins.concatStringsSep "," [
396 # FIXME: put it back when opensmtpd is upgraded and able to
397 # rewrite the from header
398 #"unix:/run/milter_verify_from/verify_from.sock"
399 "unix:${config.myServices.mail.milters.sockets.opendkim}"
402 destination = ["localhost"];
403 # This needs to reverse DNS
404 hostname = config.hostEnv.fqdn;
406 recipientDelimiter = "+";
412 args = ["-o" "smtpd_tls_wrappermode=yes" ] ++ (let
413 mkKeyVal = opt: val: [ "-o" (opt + "=" + val) ];
414 in lib.concatLists (lib.mapAttrsToList mkKeyVal config.services.postfix.submissionOptions)
423 # rspamd could be used as a milter, but then it cannot apply
424 # its checks "per user" (milter is not yet dispatched to
425 # users), so we wrap dovecot-lda inside rspamc per recipient
427 rspamc_dovecot = pkgs.writeScriptBin "rspamc_dovecot" ''
428 #! ${pkgs.stdenv.shell}
430 original_recipient="$2"
433 ${pkgs.coreutils}/bin/cat - | \
434 (${pkgs.rspamd}/bin/rspamc -h ${config.myServices.mail.rspamd.sockets.worker-controller} -c bayes -d "$user" --mime || true) | \
435 ${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f "$sender" -a "$original_recipient" -d "$user"
438 "flags=DRhu" "user=vhost:vhost"
439 "argv=${rspamc_dovecot}/bin/rspamc_dovecot \${sender} \${original_recipient} \${user}@\${nexthop}"
444 security.acme.certs."mail" = {
446 systemctl restart postfix.service
449 "smtp.immae.eu" = null;
452 security.acme.certs."mail-rsa" = {
454 systemctl restart postfix.service
457 "smtp.immae.eu" = null;
460 system.activationScripts.testmail = {
463 allCfg = config.myEnv.monitoring.email_check;
464 cfg = allCfg.eldiron;
465 reverseTargets = builtins.attrNames (lib.attrsets.filterAttrs (k: v: builtins.elem "eldiron" v.targets) allCfg);
466 to_email = cfg': host':
467 let sep = if lib.strings.hasInfix "+" cfg'.mail_address then "_" else "+";
468 in "${cfg'.mail_address}${sep}${host'}@${cfg'.mail_domain}";
469 mails_to_receive = builtins.concatStringsSep " " (map (to_email cfg) reverseTargets);
471 install -m 0555 -o nobody -g nogroup -d /var/lib/naemon/checks/email
472 for f in ${mails_to_receive}; do
473 if [ ! -f /var/lib/naemon/checks/email/$f ]; then
474 install -m 0644 -o nobody -g nogroup /dev/null -T /var/lib/naemon/checks/email/$f
475 touch -m -d @0 /var/lib/naemon/checks/email/$f