xfinity is blocking email replies from a sender in my address book
A specific sender keeps getting a rejection notification that their email has been blocked as spam. Except the email is not even in my spam folder, instead it's totally blocked. I've sent email from xfinity and put the address in my address book. Nothing has helped.
I've found nothing online anywhere about how to fix it. Surely what I've done so far the should easily be good enough!
I just setup the address as "Keep" in setting filters. I am skeptical even that will work. Who knows what other email I've sent from my iPhone POP account that has totally blocked replies. I can't add a "keep" filter for everybody I send email to.
One final observation is the domain extension is .cc instead the more commen ones like .com and .net. Perhaps that's an irredeemable crime according to comcast.