Xfinity email on Gmail app "Blacklisted IP"

Went on DM, agent went through the info I provided, then sent me to an internal web site for IP Blacklist problems. None of the FAQs applied, although 1 was close, but for SMTP server blocking logins, not the IMAP server. A link there went to a report ingest page, but none of the options in the pulldown box applied. The page noted if the options did not apply to click a link. The provided link sent me back to the FAQ page.  Some googling identified that the best course was to call a human being, gasp!, at the Comcast Security office. 1 888 565 4329.

Spoke to an agent who went through primitive diagnostics (useless stuff), had me remove my Comcast email account from Gmail, and attempt to add it back. That failed, indicating I was IP blacklisted (duh).  After 27 minutes she created an escalation ticket. We got cut off before I got a ticket number.

Twenty minutes later I got a call back for that escalated ticket. Spent 30 minutes explaining what the problem was. That agent was able to confirm my IP address was on the Black List, after some primitive diagnostics.  Again, an escalation ticket was created to third level (I think that means someone who can actually do something to fix the problem.)

No doubt I will be on an airplane when they attempt to call back.

I note that Googling this problem finds numerous examples of Comcast blocking email IMAP server access from US Cellular/T-Mobile phone IP addresses. On the various Comcast security and FAQ pages, Comcast states they do this for IP addresses associated with spammers. But we note that it is the SMTP server used to send email, IMAP server for receive and folder management. So IP blacklisting for IMAP server doesnt fix any spam-related problems. 

Not only is this disenfranchising a segment of the Comcast customer base, it is predatory behavior as defined in the various federal anti-trust statutes. See, Xfinity/Comcast sells cell phone service nation wide (rebranded from a tower-owning or tower-leading provider). So disenfranchising customers of another, competing provider, say US Cellular/T-Mobile, is prohibited. I may be worth only a few hundred dollars a month. But T-Mobile's attorneys might remind Comcast of the MILLIONS OF DOLLARS per month of T-Mobile/ US Cellular wireless service they are tampering with. Not to mention the criminal penalties for this behavior.

So c'mon Comcast, stop goofing around and get this fixed!