+++ /dev/null
-{ lib, pkgs, config, nodes, ... }:
-{
- config = lib.mkIf config.myServices.mail.enable {
- secrets.keys = {
- "postfix/mysql_alias_maps" = {
- 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 = ${config.myEnv.mail.postfix.mysql.database}
- query = SELECT DISTINCT destination
- FROM forwardings
- WHERE
- ((regex = 1 AND '%s' REGEXP CONCAT('^',source,'$') ) OR (regex = 0 AND source = '%s'))
- AND active = 1
- AND '%s' NOT IN
- (
- SELECT source
- FROM forwardings_blacklisted
- WHERE source = '%s'
- ) UNION
- SELECT 'devnull@immae.eu'
- FROM forwardings_blacklisted
- WHERE source = '%s'
- '';
- };
- "postfix/ldap_mailboxes" = {
- user = config.services.postfix.user;
- group = config.services.postfix.group;
- permissions = "0440";
- text = ''
- 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
- '';
- };
- "postfix/mysql_sender_login_maps" = {
- 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 = ${config.myEnv.mail.postfix.mysql.database}
- query = SELECT DISTINCT destination
- FROM forwardings
- WHERE
- (
- (regex = 1 AND CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d') REGEXP CONCAT('^',source,'$') )
- OR
- (regex = 0 AND source = CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d'))
- )
- AND active = 1
- UNION SELECT CONCAT(SUBSTRING_INDEX('%u', '+', 1), '@%d') AS destination
- '';
- };
- "postfix/mysql_sender_relays_maps" = {
- 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 = ${config.myEnv.mail.postfix.mysql.database}
- # INSERT INTO sender_relays
- # (`from`, owner, relay, login, password, regex, active)
- # VALUES
- # ( 'sender@otherhost.org'
- # , 'me@mail.immae.eu'
- # , '[otherhost.org]:587'
- # , 'otherhostlogin'
- # , AES_ENCRYPT('otherhostpassword', '${config.myEnv.mail.postfix.mysql.password_encrypt}')
- # , '0'
- # , '1');
-
- query = SELECT DISTINCT `owner`
- FROM sender_relays
- WHERE
- ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s'))
- AND active = 1
- '';
- };
- "postfix/mysql_sender_relays_hosts" = {
- 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 = ${config.myEnv.mail.postfix.mysql.database}
-
- query = SELECT DISTINCT relay
- FROM sender_relays
- WHERE
- ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s'))
- AND active = 1
- '';
- };
- "postfix/mysql_sender_relays_creds" = {
- 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 = ${config.myEnv.mail.postfix.mysql.database}
-
- query = SELECT DISTINCT CONCAT(`login`, ':', AES_DECRYPT(`password`, '${config.myEnv.mail.postfix.mysql.password_encrypt}'))
- FROM sender_relays
- WHERE
- ((regex = 1 AND '%s' REGEXP CONCAT('^',`from`,'$') ) OR (regex = 0 AND `from` = '%s'))
- AND active = 1
- '';
- };
- "postfix/ldap_ejabberd_users_immae_fr" = {
- user = config.services.postfix.user;
- group = config.services.postfix.group;
- permissions = "0440";
- text = ''
- server_host = ldaps://${config.myEnv.jabber.ldap.host}:636
- search_base = ${config.myEnv.jabber.ldap.base}
- query_filter = ${config.myEnv.jabber.postfix_user_filter}
- domain = immae.fr
- bind_dn = ${config.myEnv.jabber.ldap.dn}
- bind_pw = ${config.myEnv.jabber.ldap.password}
- result_attribute = immaeXmppUid
- result_format = ejabberd@localhost
- version = 3
- '';
- };
- } // lib.mapAttrs' (name: v: lib.nameValuePair "postfix/scripts/${name}-env" {
- user = "postfixscripts";
- group = "root";
- permissions = "0400";
- text = builtins.toJSON v.env;
- }) config.myEnv.mail.scripts;
-
- networking.firewall.allowedTCPPorts = [ 25 465 587 ];
-
- 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/ldap_mailboxes"
- config.secrets.fullPaths."postfix/mysql_sender_login_maps"
- config.secrets.fullPaths."postfix/ldap_ejabberd_users_immae_fr"
- ];
- };
- services.postfix = {
- extraAliases = let
- toScript = name: script: pkgs.writeScript name ''
- #! ${pkgs.stdenv.shell}
- mail=$(${pkgs.coreutils}/bin/cat -)
- output=$(echo "$mail" | ${script} 2>&1)
- ret=$?
-
- if [ "$ret" != "0" ]; then
- echo "$mail" \
- | ${pkgs.procmail}/bin/formail -i "X-Return-Code: $ret" \
- | /run/wrappers/bin/sendmail -i scripts_error+${name}@mail.immae.eu
-
- messageId=$(echo "$mail" | ${pkgs.procmail}/bin/formail -x "Message-Id:")
- repeat=$(echo "$mail" | ${pkgs.procmail}/bin/formail -X "From:" -X "Received:")
-
- ${pkgs.coreutils}/bin/cat <<EOF | /run/wrappers/bin/sendmail -i scripts_error+${name}@mail.immae.eu
- $repeat
- To: scripts_error+${name}@mail.immae.eu
- Subject: Log from script error
- Content-Type: text/plain; charset="UTF-8"
- Content-Transfer-Encoding: 8bit
- References:$messageId
- MIME-Version: 1.0
- X-Return-Code: $ret
-
- Error code: $ret
- Output of message:
- --------------
- $output
- --------------
- EOF
- fi
- '';
- scripts = lib.attrsets.mapAttrs (n: v:
- toScript n (pkgs.callPackage (builtins.fetchGit { url = v.src.url; ref = "master"; rev = v.src.rev; }) { scriptEnv = config.secrets.fullPaths."postfix/scripts/${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}: "|${v}"'') scripts);
- mapFiles = let
- recipient_maps = let
- name = n: i: "relay_${n}_${toString i}";
- pair = n: i: m: lib.attrsets.nameValuePair (name n i) (
- if m.type == "hash"
- then pkgs.writeText (name n i) m.content
- else null
- );
- pairs = n: v: lib.imap1 (i: m: pair n i m) v.recipient_maps;
- in lib.attrsets.filterAttrs (k: v: v != null) (
- lib.attrsets.listToAttrs (lib.flatten (
- lib.attrsets.mapAttrsToList pairs config.myEnv.mail.postfix.backup_domains
- ))
- );
- relay_restrictions = lib.attrsets.filterAttrs (k: v: v != null) (
- lib.attrsets.mapAttrs' (n: v:
- lib.attrsets.nameValuePair "recipient_access_${n}" (
- if lib.attrsets.hasAttr "relay_restrictions" v
- then pkgs.writeText "recipient_access_${n}" v.relay_restrictions
- else null
- )
- ) config.myEnv.mail.postfix.backup_domains
- );
- virtual_map = {
- virtual = let
- cfg = config.myEnv.monitoring.email_check.eldiron;
- address = "${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 ${n}@localhost, scripts@mail.immae.eu
- ''
- ) config.myEnv.mail.scripts
- )
- );
- };
- sasl_access = {
- host_sender_login = with lib.attrsets; let
- addresses = zipAttrs (lib.flatten (mapAttrsToList
- (n: v: (map (e: { "${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} ${joined v}") addresses));
- };
- in
- recipient_maps // relay_restrictions // virtual_map // sasl_access;
- config = {
- ### postfix module overrides
- readme_directory = "${pkgs.postfix}/share/postfix/doc";
- smtp_tls_CAfile = lib.mkForce "";
- smtp_tls_cert_file = lib.mkForce "";
- smtp_tls_key_file = lib.mkForce "";
-
- message_size_limit = "1073741824"; # Don't put 0 here, it's not equivalent to "unlimited"
- 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_mailbox_domains = config.myEnv.mail.postfix.additional_mailbox_domains
- ++ lib.remove null (lib.flatten (map
- (zone: map
- (e: if e.receive
- then "${e.domain}${lib.optionalString (e.domain != "") "."}${zone.name}"
- else null
- )
- (zone.withEmail or [])
- )
- config.myEnv.dns.masterZones
- ));
- virtual_mailbox_maps = [
- "ldap:${config.secrets.fullPaths."postfix/ldap_mailboxes"}"
- ];
- dovecot_destination_recipient_limit = "1";
- virtual_transport = "dovecot";
-
- ### Relay domains
- relay_domains = lib.flatten (lib.attrsets.mapAttrsToList (n: v: v.domains or []) config.myEnv.mail.postfix.backup_domains);
- relay_recipient_maps = lib.flatten (lib.attrsets.mapAttrsToList (n: v:
- lib.imap1 (i: m: "${m.type}:/etc/postfix/relay_${n}_${toString i}") v.recipient_maps
- ) config.myEnv.mail.postfix.backup_domains);
- smtpd_relay_restrictions = [
- "defer_unauth_destination"
- ] ++ lib.flatten (lib.attrsets.mapAttrsToList (n: v:
- if lib.attrsets.hasAttr "relay_restrictions" v
- then [ "check_recipient_access hash:/etc/postfix/recipient_access_${n}" ]
- else []
- ) config.myEnv.mail.postfix.backup_domains);
-
- ### Additional smtpd configuration
- smtpd_tls_received_header = "yes";
- smtpd_tls_loglevel = "1";
-
- ### Email sending configuration
- smtp_tls_security_level = "may";
- smtp_tls_loglevel = "1";
-
- ### Force ip bind for smtp
- 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
- smtp_sasl_auth_enable = "yes";
- smtp_sasl_password_maps =
- "mysql:${config.secrets.fullPaths."postfix/mysql_sender_relays_creds"}";
- smtp_sasl_security_options = "noanonymous";
- smtp_sender_dependent_authentication = "yes";
- sender_dependent_relayhost_maps =
- "mysql:${config.secrets.fullPaths."postfix/mysql_sender_relays_hosts"}";
-
- ### opendkim, opendmarc, openarc milters
- non_smtpd_milters = [
- "unix:${config.myServices.mail.milters.sockets.opendkim}"
- ];
- smtpd_milters = [
- "unix:${config.myServices.mail.milters.sockets.opendkim}"
- "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;
- enableSubmission = true;
- submissionOptions = {
- # Don’t use "long form", only commas (cf
- # http://www.postfix.org/master.5.html long form is not handled
- # well by the submission function)
- smtpd_tls_security_level = "encrypt";
- smtpd_sasl_auth_enable = "yes";
- smtpd_tls_auth_only = "yes";
- smtpd_sasl_tls_security_options = "noanonymous";
- smtpd_sasl_type = "dovecot";
- 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";
- smtpd_sender_login_maps = builtins.concatStringsSep "," [
- "hash:/etc/postfix/host_sender_login"
- "mysql:${config.secrets.fullPaths."postfix/mysql_sender_relays_maps"}"
- "mysql:${config.secrets.fullPaths."postfix/mysql_sender_login_maps"}"
- ];
- smtpd_recipient_restrictions = "permit_sasl_authenticated,reject";
- milter_macro_daemon_name = "ORIGINATING";
- 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}"
- ];
- };
- destination = ["localhost"];
- # This needs to reverse DNS
- hostname = config.hostEnv.fqdn;
- setSendmail = true;
- recipientDelimiter = "+";
- masterConfig = {
- submissions = {
- type = "inet";
- private = false;
- command = "smtpd";
- args = ["-o" "smtpd_tls_wrappermode=yes" ] ++ (let
- mkKeyVal = opt: val: [ "-o" (opt + "=" + val) ];
- in lib.concatLists (lib.mapAttrsToList mkKeyVal config.services.postfix.submissionOptions)
- );
- };
- dovecot = {
- type = "unix";
- privileged = true;
- chroot = false;
- command = "pipe";
- args = let
- # rspamd could be used as a milter, but then it cannot apply
- # its checks "per user" (milter is not yet dispatched to
- # users), so we wrap dovecot-lda inside rspamc per recipient
- # here.
- rspamc_dovecot = pkgs.writeScriptBin "rspamc_dovecot" ''
- #! ${pkgs.stdenv.shell}
- sender="$1"
- original_recipient="$2"
- user="$3"
-
- ${pkgs.coreutils}/bin/cat - | \
- (${pkgs.rspamd}/bin/rspamc -h ${config.myServices.mail.rspamd.sockets.worker-controller} -c bayes -d "$user" --mime || true) | \
- ${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f "$sender" -a "$original_recipient" -d "$user"
- '';
- in [
- "flags=ODRhu" "user=vhost:vhost"
- "argv=${rspamc_dovecot}/bin/rspamc_dovecot \${sender} \${original_recipient} \${user}@\${nexthop}"
- ];
- };
- };
- };
- security.acme.certs."mail" = {
- postRun = ''
- systemctl restart postfix.service
- '';
- extraDomains = {
- "smtp.immae.eu" = null;
- };
- };
- security.acme.certs."mail-rsa" = {
- postRun = ''
- systemctl restart postfix.service
- '';
- extraDomains = {
- "smtp.immae.eu" = null;
- };
- };
- system.activationScripts.testmail = {
- deps = [ "users" ];
- text = let
- allCfg = config.myEnv.monitoring.email_check;
- cfg = allCfg.eldiron;
- reverseTargets = builtins.attrNames (lib.attrsets.filterAttrs (k: v: builtins.elem "eldiron" v.targets) allCfg);
- to_email = cfg': host':
- let sep = if lib.strings.hasInfix "+" cfg'.mail_address then "_" else "+";
- in "${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";
- };
-}
projects / perso / Immae / Config / Nix.git / blobdiff