Strange POP Problem

[|nix ZixinG]

Hi guys, I've got a strange problem with my POP3 Daemon. It was working fine all along when suddenly, my client's can't authenticate. They keep having timeout error. I felt strange, so I waited, and found that after waiting for 2 minutes, it will actually authenticate and get my mail. I checked my network config, and found nothing wrong with it. I even temporilly disabled my POP3D to my old sendmail's POP3d, and its working fine. There is absolutely no lag. I even tried to send a mail with attachment to check out the network speed, and its rather fast. I'm getting 20kps consistent for my 5MB file. No problem.   The lag is just at the connection. Outlook express will just show connected for 2 minutes before it actually check   I'm using VPOPMail, QMail, TCPServer   Any help will be deeply appreciated Thanks David