I'm trying to move from using express to OL2003 and went through the process
of updating the OL2003 settings to match the Outlook Express settings.
Express works fine with these settings. I have AT&T DSL.

Server Information:
Incoming Mail is a POP3 Server
POP3 = POP3.xxxx.com
Outgoing mail (STMP) = mail.bellsouth.net
Incoming Mail Server:
Account Name = xxxx@xxxx.com
Password = xxxx
No SPA
Outgoing Mail Server = No Authentication
Server Ports
Outgoing SMTP = 25
No SSL
Incoming Mail (POP3) = 110
No SSL

When I test the settings it tests out fine but when I try to send an actual
test message, the message just sits there in the outbox. If I go and open
Express, I receive the test message.