I have a "best practice" question regarding sieve reject messages. Some of my users are using the sieve reject feature to reject spam, this works well for them but since the sender address of most spam mail is invalid, the resulting reject messages from our mail server bounces at the spammers domain. Since the sender address of the reject messages issued from our mailserver is postmaster@, I (the postmaster) end up with a lot of bounced messages...
I noticed that I can set the sender address of the reject messages in imapd.conf using the postmaster: parameter. Is the correct solution to this problem to set the postmaster: to rejected or something like that doesn't corresspond to a real user or alias on our domain ? Any other solutions to the problem above ?
Thanks -- Daniel Nilsson Signal Integrity Software Inc.
