Hi, Longtime Thunderbird user. Was online last night, emailing (sending and receiving) perfectly fine. Got online this morning - no changes to my computer or Thunderbird, and suddenly am getting this message: 'Thunderbird could not connect to server inbound.att.net. The connection was refused." I am able to read mail fine from AT&T Mail via webmail or the Yahoo Mail app. This is strictly an issue with Thunderbird and AT&T. Any other AT&T users having an issue? Any helpful suggestions? If it matters, I have a bellsouth.net email address. Thanks!