Dear list, Is that possible to run chkuser first and then greylisting? I found that my domains are forged by spamers. There are a lot of bounced messages which make my servers too busy to take record for greylisting. My idea is that if the user is non-exist, just bounce the message at smtp level, then greylisting won't keep the record in the database. It should be able to keep the greylisting database small. Any idea?? Thanks a lot.
Regards, Mick
