Google Groups blocked by Comcast servers
As of today, e-mails sent to my Google Group are not being delivered to Comcast users, even though everyone else does get them. The e-mails don't even make it to the spam folder. I suspect that a Google e-mail server is being blacklisted. I spoke with a woman in a call center about this. She said she didn't understand what I was talking about and had never been trained on how to escalate an issue to a network engineer. Does anyone here know where I can report this issue? Thanks!