Mac Mail drops connection to Tiger Mail Server

[ScottN]

Hi,

I have a customer running 10.5 server, advanced mode, with 6 client computers. All clients are running 10.6 OS. Two of these computers are constantly dropping their network connection to the mail server. With no warning, Mail will say it's not connected to the server and won't send. Rebooting the computer and opening mail will reconnect and send those messages.

What's frustrating is that it's two of 6 computers. I've checked network settings, DNS and all that. It seems configured correctly.

Is there anything I can check or other steps I need to do?

Thanks,

ScottN