>Subject: RE: New Hardware >Date: Tue, 30 Nov 2004 07:42:02 -0800 >From: "Gary W. Smith" <[EMAIL PROTECTED]> >To: Ronan <[EMAIL PROTECTED]>, spam <users@spamassassin.apache.org> > >We use 4 single processor machines 2.8ghz P4 HT and we are doing >150k per day now without breaking a sweat. We also have two >additional backend servers for running spamd. Total 6. I know you >said two but if you need to loose just one then your load might >be affected. We can bring down half of the nodes for maintenance >without any customer impact at all.
Much the same here. We use 4 single processor machines 2.0ghz Celeron boxes, 512MB ram. They all run OpenBSD, exim+exiscan, SpamAssassin, Sophos virus detection via the sophie daemon running in Linux emulation mode. The're each running their own DNS cache, courtesty of Dan Bernstein's djbdns-1.05 software. Set up like this to prevent our DNS server becoming a potential bottleneck. Although this might just be my paranoia showing through. These boxes are just for handling incoming & outgoing mail to and from the Internet. Internal email shouldn't touch them. Although in practice it does when our IMAP server gets choked. In that case internal mail is backed up to them. As above, these boxes rarely break into a sweat. When they do, it's usually because they're hit by some large mailing list on its way to the outside world. I'd be happy to take down half of them for maintenance. Although an upcoming software upgrade is likely to happen one at a time. I don't possess enough hands to upgrade two at once!
