Ed McLain wrote:
Hello all, Got a quick question for all those out there running large setups using qpsmtpd. We currently have a setup which is load balanced across an several qpsmtpd servers running a custom linux distro that basically runs the entire setup in ram for maximum performance. Until lately the setup has been running absolutely wonderful but with all these spam bots running around I've started noticing some odd issues and I'm about to start pulling my hair out. I've tweaked and tweaked the sysctl vars for the network interfaces, disabled rdns, and also removed almost all of our plugins in an attempt to keep the machines running with the flood of incoming emails. My setup is as follows: Qpsmtpd v0.32 running with forkserver
Maybe take Apache::Qpsmtpd for a spin. Anecdotal evidence suggests that it is faster than forkserver [1], and it is a fairly simple install. Apache.org is using it and processes quite a bit of mail.
[1] http://osdir.com/ml/mail.qpsmtpd/2006-04/msg00035.html
