OK shooting from the hip here I have a POP3 account with a small ISP after I updated to OS5 I had the same issue. My outgoing mail server requires password authentication to connect to the server and the password was deleted during the update. I don't know if your AOL requires such a password. i went into Settings>Mail>selected my account>Outgoing Mail Server>Primary Server and filled in the host name, user name and password and that fixed the problem for me. Good luck
Ryan Willson said:Hi everyone,
Thanks to Chrisroyall as this worked perfectly for me, had this issue for easily over a year now. When you turn off the primary SMTP server, add a new one at this will allow you to edit the outgoing settings for the server. Keep the server name as smtp.aol.com but don't add aol.com or aol.co.uk which ever one you are using, to the end of your username. Worked perfectly. Great site and great people, thanks so much.
Ryan Willson
FIXED!
Had the same problem. AOL had been working for months, stopped working for no reason. I checked the settings against aol's instructions and the username was wrong - aol state that the username should not have the @aol.com suffix but it did. The next problem encountered was that the iPad would not let me change the username under outgoing smtp settings. Answer is to do the following:
Go to settings -> mail ->aol account ->outgoing mail server.
Turn the primary smtp server off.
Create a new one for smtp.aol.com with the username without @aol.com at the end and your password.
The rest of the settings should populate automatically.
Good luck.