Can't connect to RedHat 9 SMTP server from XP
Here's the deal. I have 3 machines, 2 redhat 9 machines and 1 XP laptop plugged into a linksys router. An SMTP server is running on one RH 9 system and 2 java mail clients are running on the other RH 9 system and XP system respectively. I can connect to the smtp server from RH 9 to RH 9, but the XP system yields: ' can't connect to smtp server xxx.xxx on port 25'.
The RH 9 client sends the message after a short delay, but the XP machine fails immediately. I can't understand why. I can ping the smtp server machine from XP and I can also telnet to it. What could be blocking the port? I checked the router but I don't see anything blocking it unless it has to be explicitly allowed. I even tried that but I haven't been able to get it to work.
Is there somehow an immediate timeout on XP?