I’ve encountered this error in a few circumstances – users in Google Groups will have a red triangle and the text “Emails are Bouncing” that stops them from receiving any Google Group emails – definitely not good! I’ve seen this when former employees’ accounts are deactivated but not removed from Google Groups and then re-hired or activated later.

The fix is either remove and re-add them to their Google Group via GAM OR to have the employee go to groups.google.com, click the gear icon in the upper right, and click Global Settings.

From there, they should see under “Bounce Status” that their email is flagged as bouncing and a link that says “Resend request to recheck status” or something like that. After that, they’ll see a message that says “your email is not flagged as bouncing”. That’s it!