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Subject: Relaying Performance
From: Gregory Stark (gsstarkmit.edu)
Date: Sat Feb 05 2000 - 21:54:48 CST

Earlier someone posted a comment that they were handling 190,000 messages a
day with postfix. Admittedly he said they were probably not the record, but it
still startled me that such low numbers were considered significant.

We're currently using Exim to handle over 2M messages in an 8 hour window, I'm
trying to argue we should switch to postfix, but some early experiments were
dramatic failures.

To switch we would need postfix to accept mail over a handful of connections,
or ideally a single connection, at a rate of at least 20/s, preferably over
100/s. Then be able to keep up delivering all the mail as fast as it's
received.

Our initial experiments seemed to indicate that it couldn't deliver faster
than about 5/s. Is this just a simple tuning issue or are the numbers I'm
talking about simply infeasible with postfix? 

-- 
greg