I'm not sure if I have ever been able to send an email using the Mail program with OSX 10.3 using my .mac account. It seems every time I try, the Mail program complains that the connection to smtp.mac ...
It's been a while since I used a non-Mail.app mail program, but as I recall .Mac subscribers can send any mail out to smtp.mac.com. Is that correct? (Or does it require that the from: address is a mac ...