[KLUG Members] Tuning qmail

[Adam Bultman]

Good evening, everyone.

I take care of a few qmail servers, one of which is my work's primary mail 
server. It is a dual 700 MHz PIII with 1 GB of RAM, two 9 GB SCSI drives 
and another pair of 72 GB SCSI drives in a RAID-1 format (software).

Since the advent of mydoom, load on the poor thing hasn't dropped below 4.  
It's rejected 30k messages already because of mydoom, and since it doesn't 
appear to be letting up, I need to find a way to make the server *usable* 
again.  Spamassassin, qmail-scan, and the software RAID pretty much 
guarantee a sluggish system.

Is there anything I can do to speed things up?  Some people say 'cut down 
on your concurrent connections', but I'm rarely using more than 10 at a 
time.   I don't know what else I can do beyond that, but man... The poor 
thing is crushed from I/O...

Adam

-- 
adamb@glaven.org
[ www.glaven.org ]