At least this was my problem when I was trying to set up my Mac’s email, I may be wrong, I haven’t checked if they changed they’re outgoing rules.
Thanks guys, I only have 1 qeustion: How to add an Gmail account?This used to be the case--for a while, actually. Now that I can use my MSN account in Mail, I've put off the switch to Gmail indefinitely
Multiple (Hotmail) accounts should work fine, too, in any offline/"external" mail application