When your AT&T
email does not work with Outlook, check the following tips:
antivirus to make sure it is not interfering with the application.
checking the IMAP
and POP settings. Make sure it has the proper configuration details.
And another thing
you can try is to remove your email account and add it again.
Try these tips and if it does
not work for you, call ATT Customer Care to get the
assistance of an expert technician to help you resolve the issue.
For more info visit
ATT helpline number