I use pair.com for email and haven't had any problems will outgoing mail from my iphone until today. When using wifi, I can send just fine. But when I am in 3G mode, I get errors that the iphone cannot connect to the outgoing mail server. I also noticed a new entry for "AT&T SMTP Server" on the iphone, which I didn't add. Is AT&T blocking non AT&T SMTP servers? If so, why and is there any way to get around it?