By Clea Moore, Principal Product Manager What’s changing? Beginning this week, the MX records for AT&T domains will point to Yahoo. Email sent to AT&T users will no longer be routed through a separate gateway and passed to Yahoo; it will now come directly to Yahoo. AT&T domains will gradually be transitioned, so you may not see the change reflected immediately. What does this mean? Yahoo will now be the gateway for email sent to AT&T users. If you are experiencing delivery issues to AT&T do...