Emails to me from some (commercial?) sources are not arriving. They are not filtered, or in the spam/junk folders, either online with comcast, or my email client. There have been 6 instances from 2 senders so far.
They simply do not show up.
Moreover it seems senders are not being informed that the mail is not being delivered.
I use comcast email for a lot of personal commercial transactions. I think I'm going to stop.
@urippa I am sending you a PM to gather more detailed info.
I have been having this same problem for about a month. It actually seems to be getting worse, as I am now no longer receiving all of my emails from additional senders.