Quick question: When I add servers into the MAPS zone settings on my Plesk server, how does the spam get processed? If an RBL check flags a message as spam, does it then get passed onto my server, which will in turn process it as configured (i.e., rename the subject, delete, etc), or does the message get rejected entirely? I'm trying to cut down the amount of spam on this box, but I don't want to bounce any non-spam messages. Thanks in advance.

 

The source of the message is checked, not the message. The message is returned to the server with a nice message. The local filter will not process the message.