+ smtpd_milters = [
+ "unix:${config.myServices.mail.milters.sockets.opendkim}"
+ "unix:${config.myServices.mail.milters.sockets.opendmarc}"
+ "unix:${config.myServices.mail.milters.sockets.openarc}"
+ ];
+ };
+ enable = true;
+ enableSmtp = true;
+ enableSubmission = true;
+ submissionOptions = {
+ smtpd_tls_security_level = "encrypt";
+ smtpd_sasl_auth_enable = "yes";
+ smtpd_tls_auth_only = "yes";
+ smtpd_sasl_tls_security_options = "noanonymous";
+ smtpd_sasl_type = "dovecot";
+ smtpd_sasl_path = "private/auth";
+ smtpd_reject_unlisted_recipient = "no";
+ smtpd_client_restrictions = "permit_sasl_authenticated,reject";
+ # Refuse to send e-mails with a From that is not handled
+ smtpd_sender_restrictions =
+ "reject_sender_login_mismatch,reject_unlisted_sender,permit_sasl_authenticated,reject";
+ smtpd_sender_login_maps = "mysql:${config.secrets.fullPaths."postfix/mysql_sender_login_maps"}";
+ smtpd_recipient_restrictions = "permit_sasl_authenticated,reject";
+ milter_macro_daemon_name = "ORIGINATING";
+ smtpd_milters = "unix:${config.myServices.mail.milters.sockets.opendkim}";
+ };
+ # FIXME: Mail adressed to localhost.immae.eu will still have mx-1 as
+ # prioritized MX, which provokes "mail for localhost.immae.eu loops
+ # back to myself" errors. This transport entry forces to push
+ # e-mails to its right destination.
+ transport = ''
+ localhost.immae.eu smtp:[immae.eu]:25
+ '';
+ destination = ["localhost"];
+ # This needs to reverse DNS
+ hostname = "eldiron.immae.eu";
+ setSendmail = true;
+ sslCert = "/var/lib/acme/mail/fullchain.pem";
+ sslKey = "/var/lib/acme/mail/key.pem";
+ recipientDelimiter = "+";
+ masterConfig = {
+ submissions = {
+ type = "inet";
+ private = false;
+ command = "smtpd";
+ args = ["-o" "smtpd_tls_wrappermode=yes" ] ++ (let
+ mkKeyVal = opt: val: [ "-o" (opt + "=" + val) ];
+ in lib.concatLists (lib.mapAttrsToList mkKeyVal config.services.postfix.submissionOptions)
+ );
+ };
+ dovecot = {
+ type = "unix";
+ privileged = true;
+ chroot = false;
+ command = "pipe";
+ args = let
+ # rspamd could be used as a milter, but then it cannot apply
+ # its checks "per user" (milter is not yet dispatched to
+ # users), so we wrap dovecot-lda inside rspamc per recipient
+ # here.
+ dovecot_exe = "${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f \${sender} -a \${original_recipient} -d \${user}@\${nexthop}";
+ in [
+ "flags=DRhu" "user=vhost:vhost"
+ "argv=${pkgs.rspamd}/bin/rspamc -h ${config.myServices.mail.rspamd.sockets.worker-controller} -c bayes -d \${user}@\${nexthop} --mime --exec {${dovecot_exe}}"
+ ];
+ };