A bit more info...
Something's definitely amiss. The mail server disconnects you immediately after getting the password command. You can try it if you like...
Telnet to mail.yourdomain.com on port 110:
telnet mail.yourdomain.com 110
you'll get something like this:
Connected to mail.yourdomain.com.
Escape character is '^]'.
+OK Hello there.
You'll get: +OK Password required.
The mail server will then immediately close the connection.
Curiously enough I can read my email with Pine.