Neil Schneider wrote:
> John H. Robinson, IV said:
> >
> > However, you are going to have to get into the millions of email per
> > day to really need the likes of zmailer.
> >
> Postfix can overwhelm almost any mail server out there. It's quite
> capable of handling millions a day. There are some huge mail sites
> that use Postfix, including some that use it in front of ezmlm because
> qmail can't handle the load. It's more a limitation of hardware than
> anything in software.
>From the README.PERFORMANCE from zmailer2.99.57pre3:
A colleque of mine ran a recent ZMailer (2.99.44 I presume) between
two PPro-200 Linux machines over a dedicated 10base-T ethernet.
He submitted messages at host-A into router as fast as he could,
and routed them all to host-B over SMTP to /dev/null there.
The transfer-rate at the Host-A was about 500 000 per hour;
or 10-12 million per day... The test was run for two hours to
measure true throughput figures, not only bursts!
(Heard about this on 3-Feb-97.)
Ten million in a day. I see nothing in the postfix-2.3-20050315 sources
that inicate any speed of delivery. Zmailer was written with speed in
mind, Postfix was not.
I am not saying that Postfix is a bad MTA: It is not, it is one of the
better ones out there (the set of better ones, of course, is defined as
!Sendmail). However, I do think it would lose in a head-to-head
competition to Zmailer. I am not going to place bets on Postfix vs
qmail, though.
Perhaps that could be a topic for a future meeting: MTA Races!
-john
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