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

I am a Centurylink email customer whose URL is DMARC blocked by Comcast.  No other email provider has my URL blocked.  The information available online only provides a removal request form that pertains to BL codes.  My code is a DM code, and I cannot find any other way to contact someone at Comcast to remove this DMARC block.  Can you help?  I am not Jaded Artist. But if you  post an answer here, I can see it.  Thanks

Hello user_1h3gt6 You can try submitting a request through this link using the postmaster option. Otherwise, call our Customer Security Assurance team for assistance with the block. They are available Business Hours: 8:00am - 12:00am EST, 7 days a week at 1-888-565-4329.

Thanks.  I called your CSA group and had a very long telephone conversation with Maya there, who seemed to fix the problem.  "Fix the problem" means I was then able to send messages to this addressee without them bouncing back as undeliverable.  HOWEVER, that has been 6 days ago, and the addressee just informed me today (6/4) eyeball-to-eyeball that they have not received any emails from me since the problem started - so the emails don't bounce back to me as undeliverables, but neither does Comcast send them on to the addressee, and it appears to me as though they have been sent, but apparently are still being blocked from this addressee's inbox by Comcast without my being informed.  I am sending these messages from my laptop running Win10, with Centurylink.net as my ISP.  I have Comcast as my cable TV provider.  Where from here??

@user_1h3gt6

Thanks for the update I recommend you reach back out to our customer service security assurance team for assistance, you may also want to reach out to your Internet e-mail provider to see what other steps you need to take on their end

I, like possibly hundreds? of other email users, am getting whipsawed between Comcast and CenturyLink, beginning 5/27.  I am a CenturyLink ISP customer, and a Comcast cable TV subscriber. I have spent several hours on this, but these two telecom carriers (both under jurisdiction of the FCC, I assume) point the finger at each other as to why I cannot send emails from my CenturyLink webmail server to a Comcast subscriber - a condition that has gone on for close to 2  weeks. I am dealing with apparently level 2 tech support of both organizations, having gotten there after what seems like hours of telephone calls and emails.  Can you help?  Shall I also include and involve outside governing organizations?  No subscriber deserves to be treated as this discussion forum documents.  

@user_lkslv9​  You say "I've been sending emails with my Centurylink address" but where are you sending them from? Is it a server that is part of CentryLink or a server that is part of Comcast?

It's from a CenturyLink server

You might want to give this tool a try:

https://dmarcchecker.app/

It gives you a one-time email address, you send an email to it, and it tells you whether your message passes SPF, DKIM, and DMARC.  I noticed that CenturyLink's SPF and DMARC records are set up to hard fail, so passing all checks is mandatory. 

My email passes muster.  Therefore, why is Comcast DMARC blocking messages to their Comcast subscriber?

user_1h3gt6 Since you are not seeing any undeliverable messages now, we would need to work with the recipient. We can troubleshoot the email box and settings with them. Has the recipient added your email to their address book? That is another step that can help in case the emails are being blocked by other settings. 

It passed all 3.  I will see if my sister can set aside the time to check with Xfinity to see if they blocked me for some other reason. 

@Cincolo​ Which domain are you sending as?

@XfinityAlex​ The CenturyLink domain is q.com.  The DKIM signature for the domain is mail2world.com