tkleen

1 files changed, 47 insertions, 10 deletions

diff --git a/hosts/surtr/email/default.nix b/hosts/surtr/email/default.nix
index 9c3e8849..66c39e8f 100644
--- a/hosts/surtr/email/default.nix
+++ b/hosts/surtr/email/default.nix
@@ -204,17 +204,15 @@ in {
         postscreen_greet_action = "enforce";
       };
       masterConfig = {
-        smtps = {
+        "465" = {
           type = "inet";
           private = false;
-          command = "smtpd";
+          command = "smtpd -v";
           args = [
             "-o" "smtpd_tls_security_level=encrypt"
             "-o" "{smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1, !TLSv1.2}"
             "-o" "{smtpd_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1, !TLSv1.2}"
             "-o" "smtpd_tls_mandatory_ciphers=high"
-            "-o" "smtpd_tls_dh1024_param_file=${toString config.security.dhparams.params."postfix-smtps-1024".path}"
-            "-o" "smtpd_tls_dh512_param_file=${toString config.security.dhparams.params."postfix-smtps-512".path}"
             "-o" "{tls_eecdh_auto_curves = X25519 X448}"
 
             "-o" "smtpd_tls_wrappermode=yes"
@@ -223,16 +221,46 @@ in {
             "-o" "smtpd_tls_received_header=no"
             "-o" "cleanup_service_name=subcleanup"
             "-o" "smtpd_client_restrictions=permit_tls_all_clientcerts,reject"
-            "-o" "{smtpd_data_restrictions = check_policy_service unix:/run/postfwd3/postfwd3.sock}"
-            "-o" "smtpd_relay_restrictions=permit_tls_all_clientcerts,reject"
             "-o" "{smtpd_sender_restrictions = reject_unknown_sender_domain,reject_unverified_sender,check_policy_service unix:/run/postfix-ccert-sender-policy.sock}"
+            "-o" ''{smtpd_recipient_restrictions=reject_unauth_pipelining,reject_non_fqdn_recipient,reject_unknown_recipient_domain,check_recipient_access pgsql:${pkgs.writeText "check_recipient_access.cf" ''
+            hosts = postgresql:///email
+            dbname = email
+            query = SELECT action FROM virtual_mailbox_access WHERE lookup = '%s' OR (lookup = regexp_replace('%s', '\+[^@]*@', '@') AND NOT EXISTS (SELECT 1 FROM virtual_mailbox_access WHERE lookup = '%s'))
+          ''},permit_tls_all_clientcerts,reject}''
+            "-o" "smtpd_relay_restrictions=permit_tls_all_clientcerts,reject"
+            "-o" "{smtpd_data_restrictions = check_policy_service unix:/run/postfwd3/postfwd3.sock}"
             "-o" "unverified_sender_reject_code=550"
             "-o" "unverified_sender_reject_reason={Sender address rejected: undeliverable address}"
+            "-o" "milter_macro_daemon_name=surtr.yggdrasil.li"
+            "-o" ''smtpd_milters=${config.services.opendkim.socket}''
+          ];
+        };
+        "466" = {
+          type = "inet";
+          private = false;
+          command = "smtpd -v";
+          args = [
+            "-o" "smtpd_tls_security_level=encrypt"
+
+            "-o" "smtpd_tls_wrappermode=yes"
+            "-o" "smtpd_tls_ask_ccert=no"
+            "-o" "smtpd_tls_req_ccert=no"
+            "-o" "smtpd_sasl_type=dovecot"
+            "-o" "smtpd_sasl_path=/run/dovecot-sasl"
+            "-o" "smtpd_sasl_auth_enable=yes"
+            "-o" "smtpd_tls_received_header=no"
+            "-o" "cleanup_service_name=subcleanup"
+            "-o" "smtpd_client_restrictions=permit_sasl_authenticated,reject"
+            "-o" "{smtpd_sender_restrictions = reject_unknown_sender_domain,reject_unverified_sender,check_policy_service unix:/run/postfix-ccert-sender-policy.sock}"
             "-o" ''{smtpd_recipient_restrictions=reject_unauth_pipelining,reject_non_fqdn_recipient,reject_unknown_recipient_domain,check_recipient_access pgsql:${pkgs.writeText "check_recipient_access.cf" ''
             hosts = postgresql:///email
             dbname = email
             query = SELECT action FROM virtual_mailbox_access WHERE lookup = '%s' OR (lookup = regexp_replace('%s', '\+[^@]*@', '@') AND NOT EXISTS (SELECT 1 FROM virtual_mailbox_access WHERE lookup = '%s'))
-          ''},permit_tls_all_clientcerts,reject}''
+          ''},permit_sasl_authenticated,reject}''
+            "-o" "smtpd_relay_restrictions=permit_sasl_authenticated,reject"
+            "-o" "{smtpd_data_restrictions = check_policy_service unix:/run/postfwd3/postfwd3.sock}"
+            "-o" "unverified_sender_reject_code=550"
+            "-o" "unverified_sender_reject_reason={Sender address rejected: undeliverable address}"
             "-o" "milter_macro_daemon_name=surtr.yggdrasil.li"
             "-o" ''smtpd_milters=${config.services.opendkim.socket}''
           ];
@@ -256,7 +284,7 @@ in {
         smtp_pass = {
           name = "smtpd";
           type = "pass";
-          command = "smtpd";
+          command = "smtpd -v";
         };
         postscreen = {
           name = "smtp";
@@ -413,7 +441,7 @@ in {
         dovecotSqlConf = pkgs.writeText "dovecot-sql.conf" ''
           driver = pgsql
           connect = dbname=email
-          password_query = SELECT NULL as password, 'Y' as nopassword, "user", quota_rule, 'dovecot2' as uid, 'dovecot2' as gid FROM imap_user WHERE "user" = '%n'
+          password_query = SELECT (CASE WHEN '%k' = 'valid' AND '%m' = 'EXTERNAL' THEN NULL ELSE "password" END) as password, (CASE WHEN '%k' = 'valid' AND '%m' = 'EXTERNAL' THEN true WHEN password IS NULL THEN true ELSE NULL END) as nopassword, "user", quota_rule, 'dovecot2' as uid, 'dovecot2' as gid FROM imap_user WHERE "user" = '%n'
           user_query = SELECT "user", quota_rule, 'dovecot2' as uid, 'dovecot2' as gid FROM imap_user WHERE "user" = '%n'
           iterate_query = SELECT "user" FROM imap_user
         '';
@@ -445,7 +473,7 @@ in {
 
         auth_ssl_username_from_cert = yes
         ssl_cert_username_field = commonName
-        auth_mechanisms = external
+        auth_mechanisms = plain login external
 
         auth_verbose = yes
         verbose_ssl = yes
@@ -501,6 +529,15 @@ in {
             group = postfix
           }
         }
+        service auth {
+          vsz_limit = 2G
+
+          unix_listener /run/dovecot-sasl {
+            mode = 0600
+            user = postfix
+            group = postfix
+          }
+        }
 
         namespace inbox {
           separator = /