I got that same message and noticed all the bounces were ones with ? Yesterday morning, there was widespread outage affecting Google's Youtube, gmail and other services. Noticed those whose email addresses are not gmail (comcast, aol, etc) were not affected.
On Tue, Dec 15, 2020 at 7:27 AM Mike Russell <autolycus0152@...> wrote:
<<Interesting one - for the first time in a couple of years using , I got the message "Your Groups.io Account Is Bouncing". I immediately used the un-bounce link, and then checked the groups of which I am and owner or a member, and the one that triggered the bounce condition was GMF, probably as a result of a message sent while gmail was out of action yesterday (which made it look like the e-mail account no longer existed).>>
Same thing happened to me - the trigger was also GMF.