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Subject: Re: Outbound connection/Content Filter limit
From: Wietse Venema (wietseporcupine.org)
Date: Thu Oct 26 2000 - 19:24:21 CDT

Stephen Bolinger:
> I have Postfix configured to relay all mail to a separate address via a
> transport map. It sends the mail to a separate process which handles spam,
> virus, etc... When I performance test this setup, I send 1000 messages
> through. Postfix queues the messages within seconds, but then seems to
> space out its delivery to the relay machine by about 1 second per message.
> I've also had the same setup using the ContentFilter attribute rather than
> the transport map but saw the same performance issues.
>
> Is there some variable I can set to tune this aspect of performance? When I
> connect to the filtering program (the thing I'm relaying all the mail to)
> directly, I can throw about 5 messages per second at it. How can I make
> Postfix relay the mail faster?

Postfix makes one connection per delivery. Perhaps the filter
has a slow start up time?

        Wietse