Submission + - Comcast is blocking port 25 (SMTP) (comcast.net)
An anonymous reader writes: In an effort to reduce spam, Comcast has completely blocked port 25. In typical Comcast fashion, they informed nobody in advance of this move. They request that all users change to port 587 and they now require SMTP authentication. Good luck finding that username and password... current waittime on Comcast Technical Support = 'until the internet is no longer a valid means of communication'