Unable to send/receive email from OE.

Dear Sirs,

I have a small network of 5 computers as a Windows workgroup. I have
installed Windows 2003 and ISA Server in the server computer.

I am able to send and receive emails using Outlook express on the server computer but I am unable to send and receive emails from other remaining client computers. What is wrong ?

I have configured IP Packet filter and protocol rules also.

Thanking you in advance for your help,

With regards,

Susankhya
School of Computer Studies (SCS)
P.O. Box 5207, Kathmandu
Nepal