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LCA: Lessons from 30 years of SendmailLCA: Lessons from 30 years of SendmailPosted Feb 4, 2011 12:59 UTC (Fri) by james (subscriber, #1325)In reply to: LCA: Lessons from 30 years of Sendmail by dskoll Parent article: LCA: Lessons from 30 years of Sendmail Using qpsmtpd for traps.spamassassin.org describes how SpamAssassin had been using Postfix on a donated server for their spamtraps. Unsurprisingly, they were getting a lot of spam on that server, and postfix was having trouble keeping up. So they switched to qpsmtpd, "a flexible smtpd daemon written in Perl" which uses "Danga Interactive / Six ApartÂ’s insanely scalable event-driven asynchronous socket class". Justin reports: "results have been greatÂ… we now have a pure-perl system handling heavy volumes without breaking a sweat, certainly compared to the previous system."
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LCA: Lessons from 30 years of Sendmail Posted Feb 4, 2011 16:07 UTC (Fri) by dskoll (subscriber, #1630) [Link] I read that article. The problem with the Postfix solution was not Postfix, but the fact that they were filtering from a procmail-invoked Perl script. That's a huge fail. We run our Perl spam-scanner in conjunction with Sendmail, but we use the Milter interface to keep persistent Perl scanners running. The bottleneck in this system is by far the spam-scanning; Sendmail doesn't even show up on the radar.
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