I have a windows 2003 server with sp1 and all the recent updates.
I have Merak mail running on it.
Since yesterday, the server has been unbearably slow. I rebooted it and it was ok for 20-30 minutes before it started acting slow again.
When I unplug the network card, it immediately returns back to normal. the server has 4 cpus and the cpu usage is never above %25 while this is happening.
I have a firewall in front of this server and it is open to the public through the usual smtp, pop3, imap and http ports (for webmail..)
there are not any other unusual ports that are open.
what do you think is the problem?