X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=modules%2Fprivate%2Fmail%2Fpostfix.nix;h=054b93effc5665f76ab072032aa055093cf4abfb;hb=4c4652aabf2cb3ac8b40f2856eca07a1df9c27e0;hp=6623735c2e35c46d13a07a820499fd2256fb6a13;hpb=87a8bffd2dd9fc0cab3ede58d39c6fe963969ff0;p=perso%2FImmae%2FConfig%2FNix.git diff --git a/modules/private/mail/postfix.nix b/modules/private/mail/postfix.nix index 6623735..054b93e 100644 --- a/modules/private/mail/postfix.nix +++ b/modules/private/mail/postfix.nix @@ -4,9 +4,8 @@ services.duplyBackup.profiles.mail.excludeFile = '' + /var/lib/postfix ''; - secrets.keys = [ - { - dest = "postfix/mysql_alias_maps"; + secrets.keys = { + "postfix/mysql_alias_maps" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; @@ -18,7 +17,7 @@ hosts = unix:${config.myEnv.mail.postfix.mysql.socket} dbname = ${config.myEnv.mail.postfix.mysql.database} query = SELECT DISTINCT destination - FROM forwardings_merge + FROM forwardings WHERE ((regex = 1 AND '%s' REGEXP CONCAT('^',source,'$') ) OR (regex = 0 AND source = '%s')) AND active = 1 @@ -32,36 +31,23 @@ FROM forwardings_blacklisted WHERE source = '%s' ''; - } - { - dest = "postfix/mysql_mailbox_maps"; + }; + "postfix/ldap_mailboxes" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; text = '' - # We need to specify that option to trigger ssl connection - tls_ciphers = TLSv1.2 - user = ${config.myEnv.mail.postfix.mysql.user} - password = ${config.myEnv.mail.postfix.mysql.password} - hosts = unix:${config.myEnv.mail.postfix.mysql.socket} - dbname = ${config.myEnv.mail.postfix.mysql.database} - result_format = /%d/%u - query = SELECT DISTINCT '%s' - FROM mailboxes - WHERE active = 1 - AND ( - (domain = '%d' AND user = '%u' AND regex = 0) - OR ( - regex = 1 - AND '%d' REGEXP CONCAT('^',domain,'$') - AND '%u' REGEXP CONCAT('^',user,'$') - ) - ) - LIMIT 1 + server_host = ldaps://${config.myEnv.mail.dovecot.ldap.host}:636 + search_base = ${config.myEnv.mail.dovecot.ldap.base} + query_filter = ${config.myEnv.mail.dovecot.ldap.postfix_mailbox_filter} + bind_dn = ${config.myEnv.mail.dovecot.ldap.dn} + bind_pw = ${config.myEnv.mail.dovecot.ldap.password} + result_attribute = immaePostfixAddress + result_format = dummy + version = 3 ''; - } - { - dest = "postfix/mysql_sender_login_maps"; + }; + "postfix/mysql_sender_login_maps" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; @@ -73,15 +59,18 @@ hosts = unix:${config.myEnv.mail.postfix.mysql.socket} dbname = ${config.myEnv.mail.postfix.mysql.database} query = SELECT DISTINCT destination - FROM forwardings_merge + FROM forwardings WHERE - ((regex = 1 AND '%s' REGEXP CONCAT('^',source,'$') ) OR (regex = 0 AND source = '%s')) + ( + (regex = 1 AND CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d') REGEXP CONCAT('^',source,'$') ) + OR + (regex = 0 AND source = CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d')) + ) AND active = 1 - UNION SELECT '%s' AS destination + UNION SELECT CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d') AS destination ''; - } - { - dest = "postfix/mysql_sender_relays_maps"; + }; + "postfix/mysql_sender_relays_maps" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; @@ -109,9 +98,8 @@ ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s')) AND active = 1 ''; - } - { - dest = "postfix/mysql_sender_relays_hosts"; + }; + "postfix/mysql_sender_relays_hosts" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; @@ -129,9 +117,8 @@ ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s')) AND active = 1 ''; - } - { - dest = "postfix/mysql_sender_relays_creds"; + }; + "postfix/mysql_sender_relays_creds" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; @@ -149,9 +136,8 @@ ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s')) AND active = 1 ''; - } - { - dest = "postfix/ldap_ejabberd_users_immae_fr"; + }; + "postfix/ldap_ejabberd_users_immae_fr" = { user = config.services.postfix.user; group = config.services.postfix.group; permissions = "0440"; @@ -166,20 +152,27 @@ result_format = ejabberd@localhost version = 3 ''; - } - ]; + }; + } // lib.mapAttrs' (name: v: lib.nameValuePair "postfix/scripts/${name}-env" { + user = "postfixscripts"; + group = "root"; + permissions = "0400"; + text = builtins.toJSON v.env; + }) config.myEnv.mail.scripts; networking.firewall.allowedTCPPorts = [ 25 465 587 ]; - nixpkgs.overlays = [ (self: super: { - postfix = super.postfix.override { withMySQL = true; }; - }) ]; + users.users.postfixscripts = { + group = "keys"; + uid = config.ids.uids.postfixscripts; + description = "Postfix scripts user"; + }; users.users."${config.services.postfix.user}".extraGroups = [ "keys" ]; services.filesWatcher.postfix = { restart = true; paths = [ config.secrets.fullPaths."postfix/mysql_alias_maps" - config.secrets.fullPaths."postfix/mysql_mailbox_maps" + config.secrets.fullPaths."postfix/ldap_mailboxes" config.secrets.fullPaths."postfix/mysql_sender_login_maps" config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr" ]; @@ -219,8 +212,14 @@ fi ''; scripts = lib.attrsets.mapAttrs (n: v: - toScript n (pkgs.callPackage (builtins.fetchGit { url = v.src.url; ref = "master"; rev = v.src.rev; }) { scriptEnv = v.env; }) - ) config.myEnv.mail.scripts; + toScript n (pkgs.callPackage (builtins.fetchGit { url = v.src.url; ref = "master"; rev = v.src.rev; }) { scriptEnv = config.secrets.fullPaths."postfix/scripts/${n}-env"; }) + ) config.myEnv.mail.scripts // { + testmail = pkgs.writeScript "testmail" '' + #! ${pkgs.stdenv.shell} + ${pkgs.coreutils}/bin/touch \ + "/var/lib/naemon/checks/email/$(${pkgs.procmail}/bin/formail -x To: | ${pkgs.coreutils}/bin/tr -d ' <>')" + ''; + }; in builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList (n: v: ''${n}: "|${v}"'') scripts); mapFiles = let recipient_maps = let @@ -246,8 +245,12 @@ ) config.myEnv.mail.postfix.backup_domains ); virtual_map = { - virtual = pkgs.writeText "postfix-virtual" ( + virtual = let + cfg = config.myEnv.monitoring.email_check.eldiron; + address = "${cfg.mail_address}@${cfg.mail_domain}"; + in pkgs.writeText "postfix-virtual" ( builtins.concatStringsSep "\n" ( + ["${address} testmail@localhost"] ++ lib.attrsets.mapAttrsToList ( n: v: lib.optionalString v.external '' script_${n}@mail.immae.eu ${n}@localhost, scripts@mail.immae.eu @@ -257,11 +260,12 @@ ); }; sasl_access = { - host_sender_login = pkgs.writeText "host-sender-login" - (builtins.concatStringsSep "\n" (lib.flatten (lib.attrsets.mapAttrsToList - (n: v: (map (e: "${e} ${n}@immae.eu") v.emails)) config.myEnv.servers))); - host_dummy_mailboxes = pkgs.writeText "host-virtual-mailbox" - (builtins.concatStringsSep "\n" (lib.attrsets.mapAttrsToList (n: v: "${n}@immae.eu dummy") nodes)); + host_sender_login = with lib.attrsets; let + addresses = zipAttrs (lib.flatten (mapAttrsToList + (n: v: (map (e: { "${e}" = "${n}@immae.eu"; }) v.emails)) config.myEnv.servers)); + joined = builtins.concatStringsSep ","; + in pkgs.writeText "host-sender-login" + (builtins.concatStringsSep "\n" (mapAttrsToList (n: v: "${n} ${joined v}") addresses)); }; in recipient_maps // relay_restrictions // virtual_map // sasl_access; @@ -276,10 +280,17 @@ mailbox_size_limit = "1073741825"; # Workaround, local delivered mails should all go through scripts alias_database = "\$alias_maps"; + ### Aliases scripts user + default_privs = "postfixscripts"; + ### Virtual mailboxes config - virtual_alias_maps = "hash:/etc/postfix/virtual mysql:${config.secrets.fullPaths."postfix/mysql_alias_maps"} ldap:${config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"}"; + virtual_alias_maps = [ + "hash:/etc/postfix/virtual" + "mysql:${config.secrets.fullPaths."postfix/mysql_alias_maps"}" + "ldap:${config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"}" + ]; virtual_mailbox_domains = config.myEnv.mail.postfix.additional_mailbox_domains - ++ lib.remove "localhost.immae.eu" (lib.remove null (lib.flatten (map + ++ lib.remove null (lib.flatten (map (zone: map (e: if e.receive then "${e.domain}${lib.optionalString (e.domain != "") "."}${zone.name}" @@ -288,8 +299,10 @@ (zone.withEmail or []) ) config.myEnv.dns.masterZones - ))); - virtual_mailbox_maps = "hash:/etc/postfix/host_dummy_mailboxes mysql:${config.secrets.fullPaths."postfix/mysql_mailbox_maps"}"; + )); + virtual_mailbox_maps = [ + "ldap:${config.secrets.fullPaths."postfix/ldap_mailboxes"}" + ]; dovecot_destination_recipient_limit = "1"; virtual_transport = "dovecot"; @@ -299,8 +312,6 @@ lib.imap1 (i: m: "${m.type}:/etc/postfix/relay_${n}_${toString i}") v.recipient_maps ) config.myEnv.mail.postfix.backup_domains); smtpd_relay_restrictions = [ - "permit_mynetworks" - "permit_sasl_authenticated" "defer_unauth_destination" ] ++ lib.flatten (lib.attrsets.mapAttrsToList (n: v: if lib.attrsets.hasAttr "relay_restrictions" v @@ -317,8 +328,8 @@ smtp_tls_loglevel = "1"; ### Force ip bind for smtp - smtp_bind_address = config.myEnv.servers.eldiron.ips.main.ip4; - smtp_bind_address6 = builtins.head config.myEnv.servers.eldiron.ips.main.ip6; + smtp_bind_address = config.hostEnv.ips.main.ip4; + smtp_bind_address6 = builtins.head config.hostEnv.ips.main.ip6; # Use some relays when authorized senders are not myself smtp_sasl_mechanism_filter = "plain,login"; # GSSAPI Not correctly supported by postfix @@ -333,14 +344,19 @@ ### opendkim, opendmarc, openarc milters non_smtpd_milters = [ "unix:${config.myServices.mail.milters.sockets.opendkim}" - "unix:${config.myServices.mail.milters.sockets.opendmarc}" - "unix:${config.myServices.mail.milters.sockets.openarc}" ]; smtpd_milters = [ "unix:${config.myServices.mail.milters.sockets.opendkim}" - "unix:${config.myServices.mail.milters.sockets.opendmarc}" "unix:${config.myServices.mail.milters.sockets.openarc}" + "unix:${config.myServices.mail.milters.sockets.opendmarc}" ]; + + smtp_use_tls = true; + smtpd_use_tls = true; + smtpd_tls_chain_files = builtins.concatStringsSep "," [ "/var/lib/acme/mail/full.pem" "/var/lib/acme/mail-rsa/full.pem" ]; + + maximal_queue_lifetime = "6w"; + bounce_queue_lifetime = "6w"; }; enable = true; enableSmtp = true; @@ -357,6 +373,7 @@ smtpd_sasl_path = "private/auth"; smtpd_reject_unlisted_recipient = "no"; smtpd_client_restrictions = "permit_sasl_authenticated,reject"; + smtpd_relay_restrictions = "permit_sasl_authenticated,reject"; # Refuse to send e-mails with a From that is not handled smtpd_sender_restrictions = "reject_sender_login_mismatch,reject_unlisted_sender,permit_sasl_authenticated,reject"; @@ -367,21 +384,17 @@ ]; smtpd_recipient_restrictions = "permit_sasl_authenticated,reject"; milter_macro_daemon_name = "ORIGINATING"; - smtpd_milters = "unix:${config.myServices.mail.milters.sockets.opendkim}"; + smtpd_milters = builtins.concatStringsSep "," [ + # FIXME: put it back when opensmtpd is upgraded and able to + # rewrite the from header + #"unix:/run/milter_verify_from/verify_from.sock" + "unix:${config.myServices.mail.milters.sockets.opendkim}" + ]; }; - # FIXME: Mail adressed to localhost.immae.eu will still have mx-1 as - # prioritized MX, which provokes "mail for localhost.immae.eu loops - # back to myself" errors. This transport entry forces to push - # e-mails to its right destination. - transport = '' - localhost.immae.eu smtp:[immae.eu]:25 - ''; destination = ["localhost"]; # This needs to reverse DNS - hostname = "eldiron.immae.eu"; + hostname = config.hostEnv.fqdn; setSendmail = true; - sslCert = "/var/lib/acme/mail/fullchain.pem"; - sslKey = "/var/lib/acme/mail/key.pem"; recipientDelimiter = "+"; masterConfig = { submissions = { @@ -414,7 +427,7 @@ ${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f "$sender" -a "$original_recipient" -d "$user" ''; in [ - "flags=DRhu" "user=vhost:vhost" + "flags=ODRhu" "user=vhost:vhost" "argv=${rspamc_dovecot}/bin/rspamc_dovecot \${sender} \${original_recipient} \${user}@\${nexthop}" ]; }; @@ -428,5 +441,34 @@ "smtp.immae.eu" = null; }; }; + security.acme.certs."mail-rsa" = { + postRun = '' + systemctl restart postfix.service + ''; + extraDomains = { + "smtp.immae.eu" = null; + }; + }; + system.activationScripts.testmail = { + deps = [ "users" ]; + text = let + allCfg = config.myEnv.monitoring.email_check; + cfg = allCfg.eldiron; + reverseTargets = builtins.attrNames (lib.attrsets.filterAttrs (k: v: builtins.elem "eldiron" v.targets) allCfg); + to_email = cfg': host': + let sep = if lib.strings.hasInfix "+" cfg'.mail_address then "_" else "+"; + in "${cfg'.mail_address}${sep}${host'}@${cfg'.mail_domain}"; + mails_to_receive = builtins.concatStringsSep " " (map (to_email cfg) reverseTargets); + in '' + install -m 0555 -o postfixscripts -g keys -d /var/lib/naemon/checks/email + for f in ${mails_to_receive}; do + if [ ! -f /var/lib/naemon/checks/email/$f ]; then + install -m 0644 -o postfixscripts -g keys /dev/null -T /var/lib/naemon/checks/email/$f + touch -m -d @0 /var/lib/naemon/checks/email/$f + fi + done + ''; + }; + systemd.services.postfix.serviceConfig.Slice = "mail.slice"; }; }