On Mon, 27 Dec 2010 13:46:34 -0600
"Jack L. Stone" <ja...@sage-american.com> wrote:
> In my case a very small percentage of mail actually reaches SA
> because of several filters in front of it. Sendmail, Regex-milter,
> Greylist-milter, and other milters catch most of the truly bad stuff,
> and then hands off finally to SA. Thus, my server load is not so bad
> now. It used to be heavy indeed before adding the front filters.
We also use greylisting and other techniques, but we do everything
in Perl from MIMEDefang (including the greylisting).
Our average processing time is about 500ms. For messages that are
greylisted, the time is around 35ms. That's doing post-DATA
greylisting (because we greylist on the 4-tuple {sender, recipient,
IP, Subject}) implemented in Perl with the greylist data in
PostgreSQL. So Perl does not *have* to be slow.
Regards,
David.
