I've set up a SMTP server using IIS 6 on Windows Server 2008. I've set it up for "All Unassigned" IP adresses on port 25. I've also added 127.0.0.1 and the IP to the extrenal source in the "Relay". I've configured the Windows Firewall to accept port 25.
I am able to connect to smtp with telnet localy but not external from the IP I've added to the relay. I get the message: "Could not open connection to the host, on port 25: Connect failed"
A port scan shows that port 25 is open on the server.
Any idea what the issue might be, and how to fix?