I am running the latest SME 7.0rc1. So far SME is great, the only problem is that when I turn on spam filtering the server becomes IO bound with 99% IO wait. I check top and I see spamd at the top of the list. I turn off spam filtering, and IO wait goes down to about 2%. This is a P4 3GHz with 2 gig of ram and a single SATA disk. We only have about 60 users.
Is there any way to tune spamassassin? Is it possible to get it to write to a tempfs? Alternativily has anyone tried an alternative? I've read that MailScanner can speed up SA, but I can't find any info on configuring it with qmail. There are also ASSP and DSPAM which look promising, but again not enough info.