My email has been working fine and then all of a sudden it stopped last night. It has nothing to do with Outlook or Windows. It is AT&T. I don't know if this matters but they changed the POP and SMTP. It does say you can still use your old server settings but I think they did something without telling anyone.

http://www.att.com/esupport/article.jsp?sid=KB401570#fbid=ZlYULh50ZvD

Note: AT&T's POP/SMTP settings have recently changed to inbound.att.net and outbound.att.net. However, if you are using the old settings, they will continue to work.

The following mail server settings will work with all AT&T email domains: @ameritech.net, @att.net, @bellsouth.net, @flash.net, @nvbell.net, @pacbell.net, @prodigy.net, @sbcglobal.net, @snet.net, @swbell.net, @wans.net.

Incoming (POP): inbound.att.net

Outgoing (SMTP): outbound.att.net (requires authentication)

Incoming Port: 995, secure connection (SSL) checked

Outgoing Port: 465, secure connection (SSL) checked