Some email senders reporting bounced emails

@user_m2bs Thank you for confirming that as well. Did disabling the Spam filter, as mentioned above, resolve the issue?

Gotcha! My recommendation would be to reach out to our CSA team directly so they can make sure that everything on the back end is where it should be. You can reach out to the CSA (Customer Security Assurance Team) by calling 1-888-565-4329, between the hours of 6:00 am - 2:00 am EST, 7 days a week. 

Sadly, I did reach out to the CSA team (or at least it was some "security" team there) and they looked at the logs and claimed there was nothing indicating bounces.  The person I spoke with basically told me that if I didn't produce the bounced emails (which I have zero ability to do directly) there was nothing that Comcast would do.  FWIW, this was tracked by ticket IH219525082.  

United Healthcare confirmed that they can't get me the raw source of the bounced emails, and I'm still waiting to hear back from Gameflip to see whether they can or not.  My guess is they'll punt and say they can't either (despite my suggestion that it's in their best interest to have emails flowing well for their customers...).  

It's obvious from other forum threads that I'm not alone in experiencing this issue, so it's frustrating to hear that nobody's real keen on sorting it all out.  

@XfinityCSAEmail​ The domain for gameflip is just gameflip.com.  The sender email address appears to be [Edited: "Personal Information"].  And at least one other comcast.net user appears to be having issue with UHC, per the reply above.  I'm pretty sure I had seen some other folks comment about them specifically, too, but I don't have those references (might have been on reddit).

Regardless, gameflip replied saying they also cannot provide the bounce details so I'm pretty much screwed.  I guess I'll have to just not use my comcast.net email for these things.  

@user_pm5922 I am not seeing any attempts from gameflip.com to even reach our comcast.net email servers. In regards to United Health care the only instances I can see where they are being blocked by our server is from origin domains that are not related to them attempting to appear as United Healthcare. If I remove the phishers the logs confirm that all emails sent by uhc.com are being delivered to all Comcast.net customers. If they see otherwise, it would have to be something specific on their end. Could also be that they spun up new servers and could be mixed in with the illegitimate senders. Alternatively, If they would like they can contact the Customer Security Assurance department at 888-565-4329 and provide us a reference list for all the IPs being used by their outbound email servers to ensure we have an accurate and up to date listing for them - we would gladly double check. Otherwise, I am not seeing  anything specific on our end that could cause an issue like a block or filter. To note, we don't filter or block per person. It's all applied to everyone on comcast.net - if 500,000 comcast.net emails are getting the emails and 5 aren't, its likely to be something on the sender side.

@XfinityCSAEmail​

from [Edited: "Personal Information"]

Have you reached out to that sender and asked is there any type of error message they receive when trying to email you 

Yes, I spoke with Goldman Sachs who manages Apple Card and they said they're emails have been bouncing back for a few months.  They asked me to shut off spam filters and see what happens.  I have no spam filters set on XfinityConnect. Spam filtering is done on my Mac Mail.

Did they advise if there was any kind of error message error  code?

That's interesting, they might want to suspend their rules targeting emails flagged as spam by filtration services. Most email servers nowadays use a spam filtration service to route emails before they get to inboxes. Comcast servers being one of them. If one email gets automatically flagged as spam by the server it seems like their response is to just not send the email. This is an automated response by the Comcast.net servers and similarly on the sender side, but they may want to disable the rule on their side(sender) since its causing bounce errors. Unfortunately, we cannot turn off the spam filtration service because if we did, the spam folder would cease to function and all emails spam or not would get directed to the inbox for every single comcast.net user. If you have a ticket still open with Goldman Sachs please advise them that you cannot control the spam filtering and that it cannot be disabled and that they need to adjust their sending policies to allow the sending of the emails anyway if its auto-flagged as spam.

But it's not just Goldman Sachs, it happens with other companies and senders as you can tell by this thread. Plus I've been receiving emails from Fidelity for years and then in April they started getting notices that the email was rejected.  I talked to a member from the CSA team today and he assured me that the problem would be fixed and that it was probably due to a system update in April.