Somebody in the thread at some point said: > Suddenly (starting yesterday) my mailserver is very slow when I send mail > through it. > > I cranked up ettercap on the server to watch what's going on, and it connects > immediately when I send mail, but just sits there for between ten and thirty > seconds before it finally accepts the mail for sending. On the server, what is in /etc/resolv.conf? What happens if you ssh into the server and try to do, eg dig <sending client ip>@<nameserver ip in server /etc/resolv.conf> for example dig 192.168.0.10@xxxxxxxxxxxxxxx and how fast does it come back with a reply? Are you using a realtime blackhole for lookup? Maybe that is slow. -Andy
