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Commit | Line | Data |
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1 | { lib, pkgs, config, nodes, name, ... }: | |
2 | { | |
3 | config = lib.mkIf config.myServices.mailBackup.enable { | |
4 | security.acme.certs."mail" = config.myServices.certificates.certConfig // { | |
5 | postRun = '' | |
6 | systemctl restart postfix.service | |
7 | ''; | |
8 | domain = config.hostEnv.fqdn; | |
9 | extraDomains = let | |
10 | zonesWithMx = builtins.filter (zone: | |
11 | lib.attrsets.hasAttr "withEmail" zone && lib.lists.length zone.withEmail > 0 | |
12 | ) config.myEnv.dns.masterZones; | |
13 | mxs = map (zone: "${config.myEnv.servers."${name}".mx.subdomain}.${zone.name}") zonesWithMx; | |
14 | in builtins.listToAttrs (map (mx: lib.attrsets.nameValuePair mx null) mxs); | |
15 | }; | |
16 | secrets.keys = { | |
17 | "postfix/mysql_alias_maps" = { | |
18 | user = config.services.postfix.user; | |
19 | group = config.services.postfix.group; | |
20 | permissions = "0440"; | |
21 | text = '' | |
22 | # We need to specify that option to trigger ssl connection | |
23 | tls_ciphers = TLSv1.2 | |
24 | user = ${config.myEnv.mail.postfix.mysql.user} | |
25 | password = ${config.myEnv.mail.postfix.mysql.password} | |
26 | hosts = ${config.myEnv.mail.postfix.mysql.remoteHost} | |
27 | dbname = ${config.myEnv.mail.postfix.mysql.database} | |
28 | query = SELECT DISTINCT 1 | |
29 | FROM forwardings | |
30 | WHERE | |
31 | ((regex = 1 AND '%s' REGEXP CONCAT('^',source,'$') ) OR (regex = 0 AND source = '%s')) | |
32 | AND active = 1 | |
33 | AND '%s' NOT IN | |
34 | ( | |
35 | SELECT source | |
36 | FROM forwardings_blacklisted | |
37 | WHERE source = '%s' | |
38 | ) UNION | |
39 | SELECT 'devnull@immae.eu' | |
40 | FROM forwardings_blacklisted | |
41 | WHERE source = '%s' | |
42 | ''; | |
43 | }; | |
44 | "postfix/ldap_mailboxes" = { | |
45 | user = config.services.postfix.user; | |
46 | group = config.services.postfix.group; | |
47 | permissions = "0440"; | |
48 | text = '' | |
49 | server_host = ldaps://${config.myEnv.mail.dovecot.ldap.host}:636 | |
50 | search_base = ${config.myEnv.mail.dovecot.ldap.base} | |
51 | query_filter = ${config.myEnv.mail.dovecot.ldap.postfix_mailbox_filter} | |
52 | bind_dn = ${config.myEnv.mail.dovecot.ldap.dn} | |
53 | bind_pw = ${config.myEnv.mail.dovecot.ldap.password} | |
54 | result_attribute = immaePostfixAddress | |
55 | result_format = dummy | |
56 | version = 3 | |
57 | ''; | |
58 | }; | |
59 | "postfix/sympa_mailbox_maps" = { | |
60 | user = config.services.postfix.user; | |
61 | group = config.services.postfix.group; | |
62 | permissions = "0440"; | |
63 | text = '' | |
64 | hosts = ${config.myEnv.mail.sympa.postgresql.host} | |
65 | user = ${config.myEnv.mail.sympa.postgresql.user} | |
66 | password = ${config.myEnv.mail.sympa.postgresql.password} | |
67 | dbname = ${config.myEnv.mail.sympa.postgresql.database} | |
68 | query = SELECT DISTINCT 1 FROM list_table WHERE '%s' IN ( | |
69 | CONCAT(name_list, '@', robot_list), | |
70 | CONCAT(name_list, '-request@', robot_list), | |
71 | CONCAT(name_list, '-editor@', robot_list), | |
72 | CONCAT(name_list, '-unsubscribe@', robot_list), | |
73 | CONCAT(name_list, '-owner@', robot_list), | |
74 | CONCAT('sympa-request@', robot_list), | |
75 | CONCAT('sympa-owner@', robot_list), | |
76 | CONCAT('sympa@', robot_list), | |
77 | CONCAT('listmaster@', robot_list), | |
78 | CONCAT('bounce@', robot_list), | |
79 | CONCAT('abuse-feedback-report@', robot_list) | |
80 | ) | |
81 | ''; | |
82 | }; | |
83 | "postfix/ldap_ejabberd_users_immae_fr" = { | |
84 | user = config.services.postfix.user; | |
85 | group = config.services.postfix.group; | |
86 | permissions = "0440"; | |
87 | text = '' | |
88 | server_host = ldaps://${config.myEnv.jabber.ldap.host}:636 | |
89 | search_base = ${config.myEnv.jabber.ldap.base} | |
90 | query_filter = ${config.myEnv.jabber.postfix_user_filter} | |
91 | domain = immae.fr | |
92 | bind_dn = ${config.myEnv.jabber.ldap.dn} | |
93 | bind_pw = ${config.myEnv.jabber.ldap.password} | |
94 | result_attribute = immaeXmppUid | |
95 | result_format = ejabberd@localhost | |
96 | version = 3 | |
97 | ''; | |
98 | }; | |
99 | }; | |
100 | ||
101 | networking.firewall.allowedTCPPorts = [ 25 ]; | |
102 | ||
103 | users.users."${config.services.postfix.user}".extraGroups = [ "keys" ]; | |
104 | services.filesWatcher.postfix = { | |
105 | restart = true; | |
106 | paths = [ | |
107 | config.secrets.fullPaths."postfix/mysql_alias_maps" | |
108 | config.secrets.fullPaths."postfix/sympa_mailbox_maps" | |
109 | config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr" | |
110 | config.secrets.fullPaths."postfix/ldap_mailboxes" | |
111 | ]; | |
112 | }; | |
113 | services.postfix = { | |
114 | mapFiles = let | |
115 | recipient_maps = let | |
116 | name = n: i: "relay_${n}_${toString i}"; | |
117 | pair = n: i: m: lib.attrsets.nameValuePair (name n i) ( | |
118 | if m.type == "hash" | |
119 | then pkgs.writeText (name n i) m.content | |
120 | else null | |
121 | ); | |
122 | pairs = n: v: lib.imap1 (i: m: pair n i m) v.recipient_maps; | |
123 | in lib.attrsets.filterAttrs (k: v: v != null) ( | |
124 | lib.attrsets.listToAttrs (lib.flatten ( | |
125 | lib.attrsets.mapAttrsToList pairs config.myEnv.mail.postfix.backup_domains | |
126 | )) | |
127 | ); | |
128 | relay_restrictions = lib.attrsets.filterAttrs (k: v: v != null) ( | |
129 | lib.attrsets.mapAttrs' (n: v: | |
130 | lib.attrsets.nameValuePair "recipient_access_${n}" ( | |
131 | if lib.attrsets.hasAttr "relay_restrictions" v | |
132 | then pkgs.writeText "recipient_access_${n}" v.relay_restrictions | |
133 | else null | |
134 | ) | |
135 | ) config.myEnv.mail.postfix.backup_domains | |
136 | ); | |
137 | virtual_map = { | |
138 | virtual = let | |
139 | cfg = config.myEnv.monitoring.email_check.eldiron; | |
140 | address = "${cfg.mail_address}@${cfg.mail_domain}"; | |
141 | in pkgs.writeText "postfix-virtual" ( | |
142 | builtins.concatStringsSep "\n" ( | |
143 | ["${address} 1"] ++ | |
144 | lib.attrsets.mapAttrsToList ( | |
145 | n: v: lib.optionalString v.external '' | |
146 | script_${n}@mail.immae.eu 1 | |
147 | '' | |
148 | ) config.myEnv.mail.scripts | |
149 | ) | |
150 | ); | |
151 | }; | |
152 | in | |
153 | recipient_maps // relay_restrictions // virtual_map; | |
154 | config = { | |
155 | ### postfix module overrides | |
156 | readme_directory = "${pkgs.postfix}/share/postfix/doc"; | |
157 | smtp_tls_CAfile = lib.mkForce ""; | |
158 | smtp_tls_cert_file = lib.mkForce ""; | |
159 | smtp_tls_key_file = lib.mkForce ""; | |
160 | ||
161 | message_size_limit = "1073741824"; # Don't put 0 here, it's not equivalent to "unlimited" | |
162 | mailbox_size_limit = "1073741825"; # Workaround, local delivered mails should all go through scripts | |
163 | alias_database = "\$alias_maps"; | |
164 | ||
165 | ### Relay domains | |
166 | relay_domains = let | |
167 | backups = lib.flatten (lib.attrsets.mapAttrsToList (n: v: v.domains or []) config.myEnv.mail.postfix.backup_domains); | |
168 | virtual_domains = config.myEnv.mail.postfix.additional_mailbox_domains | |
169 | ++ lib.remove null (lib.flatten (map | |
170 | (zone: map | |
171 | (e: if e.receive | |
172 | then "${e.domain}${lib.optionalString (e.domain != "") "."}${zone.name}" | |
173 | else null | |
174 | ) | |
175 | (zone.withEmail or []) | |
176 | ) | |
177 | config.myEnv.dns.masterZones | |
178 | )); | |
179 | in | |
180 | backups ++ virtual_domains; | |
181 | relay_recipient_maps = let | |
182 | backup_recipients = lib.flatten (lib.attrsets.mapAttrsToList (n: v: | |
183 | lib.imap1 (i: m: "${m.type}:/etc/postfix/relay_${n}_${toString i}") v.recipient_maps | |
184 | ) config.myEnv.mail.postfix.backup_domains); | |
185 | virtual_alias_maps = [ | |
186 | "hash:/etc/postfix/virtual" | |
187 | "mysql:${config.secrets.fullPaths."postfix/mysql_alias_maps"}" | |
188 | "ldap:${config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"}" | |
189 | ]; | |
190 | virtual_mailbox_maps = [ | |
191 | "ldap:${config.secrets.fullPaths."postfix/ldap_mailboxes"}" | |
192 | "pgsql:${config.secrets.fullPaths."postfix/sympa_mailbox_maps"}" | |
193 | ]; | |
194 | in | |
195 | backup_recipients ++ virtual_alias_maps ++ virtual_mailbox_maps; | |
196 | smtpd_relay_restrictions = [ | |
197 | "defer_unauth_destination" | |
198 | ] ++ lib.flatten (lib.attrsets.mapAttrsToList (n: v: | |
199 | if lib.attrsets.hasAttr "relay_restrictions" v | |
200 | then [ "check_recipient_access hash:/etc/postfix/recipient_access_${n}" ] | |
201 | else [] | |
202 | ) config.myEnv.mail.postfix.backup_domains); | |
203 | ||
204 | ### Additional smtpd configuration | |
205 | smtpd_tls_received_header = "yes"; | |
206 | smtpd_tls_loglevel = "1"; | |
207 | ||
208 | ### Email sending configuration | |
209 | smtp_tls_security_level = "may"; | |
210 | smtp_tls_loglevel = "1"; | |
211 | ||
212 | ### Force ip bind for smtp | |
213 | smtp_bind_address = config.myEnv.servers."${name}".ips.main.ip4; | |
214 | smtp_bind_address6 = builtins.head config.myEnv.servers."${name}".ips.main.ip6; | |
215 | ||
216 | smtpd_milters = [ | |
217 | "unix:${config.myServices.mail.milters.sockets.opendkim}" | |
218 | "unix:${config.myServices.mail.milters.sockets.openarc}" | |
219 | "unix:${config.myServices.mail.milters.sockets.opendmarc}" | |
220 | ]; | |
221 | }; | |
222 | enable = true; | |
223 | enableSmtp = true; | |
224 | enableSubmission = false; | |
225 | destination = ["localhost"]; | |
226 | # This needs to reverse DNS | |
227 | hostname = config.hostEnv.fqdn; | |
228 | setSendmail = false; | |
229 | sslCert = "/var/lib/acme/mail/fullchain.pem"; | |
230 | sslKey = "/var/lib/acme/mail/key.pem"; | |
231 | recipientDelimiter = "+"; | |
232 | }; | |
233 | }; | |
234 | } | |
235 |