Returned in a non-delivery notification. Like this: Remote host said:
550 Spam not accepted. [BODY] ________________________________ From: Wietse Venema <[email protected]> To: J. <[email protected]> Cc: "[email protected]" <[email protected]> Sent: Tuesday, November 4, 2014 12:19 PM Subject: Re: header checks/body checks J.: > I'm using header_checks and body_checks to block certain classes > of spam that amavis/sa don't seem to be able to catch. The trouble > is that when it rejects the message, the message failure text is > sent followed by: Sent as in: [ ] Returned to the SMTP client? [ ] Returned in a non-delivery notification from your Postfix server? [ ] Logged to the system logfile? [ ] ???? Wietse
