[Mailmunge] Reject Log Error Code

[postfix at ptld.com]

Just FYI if you wanted to know, Wietse says postfix leaves the code off 
intentionally.

> Intentional. The Milter handles all email, including non-SMTP
> contexts (local pickup daemon, qmqpd daemon, and internally-forwarded
> mesasages). The 550 status is meaningful only in an SMTP context.
> The 5.7.1 on the other hand is valid in any email handling context.
> 
> Postfix encapsulates the channel-specific details in dedicated
> programs. For example, SMTP status codes are handled in the SMTP
> server and client; and UNIX process exit status codes in the local
> and pipe delivery agents).
> 
> 	Wietse