> > >what are the settings for your network card. It may be helpful > >to configure the speed and duplex settings on both the > >server and the switch if possible. > > I didn't touch the standard setting, I don't even know how > to, probably > they are set to AUTO in FreeBSD, the switch is not manageable so the > only option is AUTO too. > Check form network errors (netstat -i I think). it may be worth still trying to set the network interface on the server, espcially if you are seeing any network errors. I doubt this is the problem, It might be worth looking at the link Eric supplied as well as monitoring the postfix processes for some sort of mail attack. Also check any windows boxes on the same network for any virus infections. We had a client with
a few viruses and the crappy network card just stopped passing packets under load. A rebbot would fix it for 10-15 mins. The problem was that it killed the whole local LAN. may be worth looking at.
