Jim Maul wrote:
If you do *recipient* verification as opposed to sender, why would
there be any bounce message at all? reject unknown recipients at smtp
time. Wheres the problem? All sender verification seems to do at this
point is create load on your and other peoples servers, and provide a
mechanism for spammers to have you do their work for them. Add to that
the fact that the from is always almost forged and what good is it?
Hardly seems worth it to me.
-Jim
Actually I do recipient verification first. I do front ent spam
filtering and sometimes the people I do filtering for will verify
everything. On high spam domains I have had to require that they give me
a list of good email addresses so I can bounce at connect time.