I am running Fedora Core 5 with Postfix and Dovecot for email running.
When logged into the linux box, I can telnet localhost to both port 25 and port 110, and get a response. I have successfully manually entered an email message and then logged into the POP3 server and saw that message there.
However, when I try to set an account up on a different machine on the network, it can't connect to either the POP3 or SMTP services. Also, I'm having problems telnetting to the box on ports 25 and 110.
When I telnet to port 110 on that box, from another computer, I see that Dovecot is running, but then it becomes unresponsive. Telnetting to port 25 from another computer results in a disconnection.
I have verified that the daemons are running, and that the Linux firewall is configured to allow incoming connections on those ports. A netstat -l shows that the box is listening to ports 25 and 110 for connections on all interfaces.
I'm just at a total loss...
Anyone have any ideas?