moderated Re: Outlook.com and Groups.io - Bounce messages are not about Outlook.com
One additional piece of information, that is specific to Outlook.com, is this, from another group administrator responding to my complaint that the reason for the bounce is not obvious:
It would be if Outlook didn't insert all that extra crap up front. Other email services don't add it, so the error is right at the top.
So all the gobbledy-gook that Outlook inserts ahead of the line that starts with, "Diagnostic information," are only Outlook, and they make the situation more confusing, not less.
Brian - Windows 10, 64-Bit, Version 21H1, Build 19043
Science has become just another voice in the room; it has lost its platform. Now, you simply declare your own truth.
~ Dr. Paul A. Offit, in New York Times article, How Anti-Vaccine Sentiment Took Hold in the United States, September 23, 2019