Merge branch 'feat/mail-policy' into nightly

data/Dockerfiles/postfix/postfix.sh

@@ -278,6 +278,19 @@ query = SELECT CONCAT_WS(':', username, password) AS auth_data FROM transports
   LIMIT 1;
 EOF
 
+# Mail policies: while policies or internal aliases exist, smtpd asks the policy service (mailcow_mail_policy in main.cf)
+cat <<EOF > /opt/postfix/conf/sql/mysql_mail_policy_maps.cf
+# Autogenerated by mailcow
+user = ${DBUSER}
+password = ${DBPASS}
+hosts = unix:/var/run/mysqld/mysqld.sock
+dbname = ${DBNAME}
+query = SELECT 'mailcow_mail_policy' FROM DUAL WHERE '%s' != ''
+  AND (EXISTS (SELECT 1 FROM mail_policy_member JOIN mail_policy ON mail_policy.id = mail_policy_member.policy_id
+      WHERE mail_policy.active = '1')
+    OR EXISTS (SELECT 1 FROM alias WHERE internal = '1' AND active IN ('1', '2')));
+EOF
+
 cat <<EOF > /opt/postfix/conf/sql/mysql_virtual_alias_domain_maps.cf
 # Autogenerated by mailcow
 user = ${DBUSER}