Remove automatic "DMARC" block (DM000001) from my gmail address PLEASE.

Suddenly I am getting block errors from Comcast, who has blocked my gmail address from my Comcast email address.  This has been efficiently working for years, until now.. because I guess you want to throw a wrench in the works of your competitor.  Look, I am not your competition... just your Internet customer for 25 years.. cut it out!  You provide a phone number for me to call.. I don't have time for this [Edited: "Language"].. I don't have time to call your outsourced customer service agents across the world who are never really able to solve any Comcast problems.  NO ONE DOES.. You sell Internet, USE IT.. allow your customers to click a link to remove their gmail address from your [Edited: "Language"] general block on any gmail.com email address.