Stan Hoeppner:
> On 8/23/2011 9:10 AM, Kov?cs J?nos wrote:
> > Thanks Ralf! It's amazing how much spam the pregreet test and a good RBL
> > can catch.
> > Do you have any data on how many spam emails survived postscreen?
>
> Overall, Postscreen is no better nor worse at stopping spam than what
> we've all been doing via SMTPD for many years. It simply decreases the
> number of SMTPD processes required to do so, hence decreasing server
> load and allowing more processing of legitimate mail.
>
> Postscreen is no magic bullet, it's overall "catch rate" being little
> different than setups without Postscreen.
Agreed. Postscreen's main goal is to reduce mail server load, so
that you can postpone that forklift upgrade.
Postscreen also stops a few percent of spambots that popular DNSBLs
miss, but at this time, that is only a minor benefit.
Wietse
