Bruce,
Mimecast is not a "crude" provider of anti-spam/virus filtering. It's one of the industry best.
Regardless of your perspective of the mission of groups.io, you have to respect the needs of every organization to implement protections against malicious email.? Fully 4 out of 5 of all emails on the internet are garbage - any organization NOT implementing protections against that is what I'd characterize as "absurd".
My message was posted as a bit of a "PSA" to help moderators who may be seeing bounced emails due to anti-spam filtering such as this (particularly when they're interacting with people who are using their professional/business email when the group membership is relevant to their professional responsibilities), so as to help them understand that in many cases it will require a collaborative effect, involving the recipient's IT support, to resolve undeliverables.? It's easy to blame groups.io when something doesn't deliver... as someone who has performed systems administration for email systems for decades, I can say that it's FAR more often that email delivery problems are the result of issues on the recipient's side, than it is a result of issues on the sender's side.
I really enjoy the fact that the groups.io platform exposes the errors encountered when bounces occur... it gives me the information needed to take it to the next step.
Regards,
Bryan
