I kept changing the password trying to get it to work and it looks like I got the passwords mixed up. ATT is confusing because it is Yahoo, Bellsouth.net and ATT.net all combined. Thanks again for your reply.
I had the same problem and took the advise to delete the email accounts and start over. After I deleted the accounts I tried to enter a new account with the same email address and it apparently is still remembering the old one and wants a password that I have no idea what it is. I have lost all...