Hi johnralls. Thank you for creating a post on our Forum. We would like to offer assistance, however we will need a bit more information about the issue you are experiencing. Can you provide a bit more detailed information / screenshots / symptoms?
Sure. Here's the bounce message:
Subject: Permanent ErrorDate: January 22, 2021 at 8:25:20 AM PSTTo:<edited>
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed permanently:
Reason: Permanent Error
Reporting-MTA: dns; resqmta-po-08v.sys.comcast.net [188.8.131.52]
Received-From-MTA: dns; resomta-po-03v.sys.comcast.net [184.108.40.206]
Arrival-Date: Fri, 22 Jan 2021 16:19:17 +0000
Final-recipient: rfc822; <edited>
Diagnostic-Code: smtp; 554 5.7.1 Service unavailable; Client host [220.127.116.11] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?18.104.22.168
Last-attempt-Date: Fri, 22 Jan 2021 16:25:20 +0000<post edited for violating forum guidelines>
Thanks for the screenshot @johnralls.
Are you only getting bounce-back when sending to that single recipient?
Have you checked with the owner of that address that it is a valid or still active address?
Have you tried to send mail to that address using any other address or mail service?
Yes, I routinely communicate with that address. No, I haven't had any more bounces due to spam cop, and in fact a followup email a few minutes later went via a different chain of comcast MTAs and didn't trip spamcop.
It's entirely possible, likely even, that the comcast mail admins discovered the bounce separately and resoloved it. After all, it's been 2 weeks since I reported it. I did so here because there doesn't seem to be any other way for customers to communicate with humans than to post here. I hoped that the response from the staff monitoring the forum would be to just timely forward the information to the mail admins. That's obviously not the case so I won't bother in future.