[Postfix] Add listener for BCC sender used by meta_exporter in Rspamd

data/conf/postfix/master.cf

@@ -70,6 +70,16 @@ submission inet n       -       n       -       -       smtpd
   -o syslog_name=postfix/quarantine
   -o smtpd_end_of_data_restrictions=$smtpd_last_auth
 
+# used to send bcc mails
+591 inet n      -       n       -       -       smtpd
+  -o smtpd_helo_restrictions=
+  -o smtpd_client_restrictions=permit_mynetworks,reject
+  -o smtpd_tls_auth_only=no
+  -o smtpd_milters=
+  -o non_smtpd_milters=
+  -o syslog_name=postfix/bcc
+  -o smtpd_end_of_data_restrictions=$smtpd_last_auth
+
 # enforced smtp connector
 smtp_enforced_tls      unix  -       -       n       -       -       smtp
   -o smtp_tls_security_level=encrypt