When I look in my mail.log I see a lot of these massages: pop3d: TIMEOUT, imapd: TIMEOUT, It is at all of my three Ispconfig servers. The logfiles is now 9 hours old and this is the result of: cat /var/log/mail.log | grep TIMEOUT | wc -l Server1= 255 Server2= 30 Server3= 150 They all work but there is timeouts so customers has to wait for mailchesk some times. The server is not overloladed as I can see in Munin. Do some one has a clue? All the server has Ispconfig 2.2.32 and is set up by Till. It is Ubuntu 8.04 64 4Gb ram.