AT&T (formerly BellSouth)
POP Acct Incoming Server: mail.bellsouth.net
SMTP - Outgoing Mail Server: mail.bellsouth.net
Port should be : 110
Do Not Select Use SSL
Sever Port Should Be: 25
Make sure SSL - Secure Sockets Layer Is NOT Selected
If you receive this error "the authentication type is not supported by Entourage", you can try resetting the MTU. For directions see Problems after conversion to AT&T (formerly BellSouth)