Lildebfin, that may have been phishing mail. The link might have been to someone trying to get your account info.
I understand how frustrating this can be. Those of us who volunteer to help here have pushed on Comcast in various ways to get answers, but they are not forthcoming. I have no insight into any problem at Comcast. But sometimes when people are suggesting things, we try everything suggested and they don't fit together.
If if we're having this problem, I would change my password again and make sure I changed it and the ports and servers I need to connect to in my mail program. I know in the Mac and iOS that involves changing the password in two places - incoming and outgoing. I'd make sure I was using mail.comcast.net for incoming and smtp.comcast.net for outgoing. I'd make sure I wasn't using port 25 for outgoing because blocking that is one of the first things Comcast does to stop spamming.
Then I would try to send myself mail. Does it get to the web-based mail? If so, part of the problem is solved.
None of this will work if something is broken on the Comcast servers. But many people are having no problem. I wonder if you can create a new secondary account and forward your mail to that until ths is fixed.
