Groupwise

I have (Had) an email server on site that was up running on windows
server 2003 platform. The firewall was replaced the 15 of this month and
had has not had lan usage since. The client(s)use XP pop3 smtp The
failure is to logon to pop3... The groupwise unit will pass email thru
the wan in and out but the lan configuration fails to pop3 authenicate. I
have tried the support link for this failure but have not been able to
configure to resolve this issue. What version should be on the server and
clients? so that should I need to call support that this will be one
(Less) issue. Also I tried to download the client and the firewall found
addware and blocked the completion Joe, Cal Comm