From: Eric Frazier (no email)
Date: Fri May 11 2007 - 19:09:02 EDT
I can't seem to find a single, clean way of doing this. Basically if
mail is rejected, never ever send a bounce message.
I can do this:
soft_bounce = no
but that just keeps the evil mail from being copied going out in the
bounce. I thought something in smtpd_recipient_restrictions would
help, but I can't seem to find a way to reject with a 550 type of thing.