By the way, seen this about Grey Listing. Uses Packet Filter + Spamassassin :
http://www.onlamp.com/pub/a/bsd/2007/01/18/greylisting-with-pf.html - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]