Dear Symantec Developers,
we've recently switched our external mail relay from postfix to SMG.
When Emails are rejected by “IP Reputation” or “DNS Check” only the “IP address” is logged to the “Message Audit Log”.
This is NOT very useful because most of the Users don’t know the Sender IP of the Mail Server. A great solution to this problem is the Postfix smtpd_delay_reject feature.
http://www.postfix.org/postconf.5.html#smtpd_delay_reject
With this feature the connection will be dropped after the RCP TO command instead of the IP or HELO command.
Best Regards,
Corvin Schmid