Hello. A message began to arrive in the mail. Message text in the screenshot. I understand that this is due to the wrong email address of the user. But how do you fix it? UNA version 11.
I deleted this user's account, but the message still comes in. This happens every minute.
Problem solved! This error is on the hosting side.
Thank you for posting that it is solved. Good to know in case we have similar problems. Can you edit the title and mark it [SOLVED]
How did you fix that? Same problem here...