I am trying to find out who to contact regarding an issue that's been going on for at least the last month. Emails from my G Suite domain (ristineteam.com) are not being delivered to comcast.net addresses, including my own. In their logs, G Suite marks the message as delivered, but it never reaches the recipient. Nor are the emails in the Spam folder. They seem to simply vanish somewhere leaving Google's servers. Emails are received by all recipients without comcast.net email addresses, which points to Comcast as the common denominator. I have verified that my domain is not listed on any public blocklist. I am not receiving any return error message from Comcast's MX servers. My domain has SPF/DKIM/DMARC set up. I have seen this same issue reported here before and straightened out by an employee working out of the @ComcastAntiSpam account (http://forums.xfinity.com/t5/Email-Web-Browsing/Comcast-blocking-G-Suite-Domain-Who-to-contact/td-p/...).
Any suggestions that someone could give on who to contact regarding this issue would be greatly appreciated.
I looked at this yesterday. Is it still not working properly?