In case auto reply is set and a message bounces back. Will that result in triggering a loop so that the account keeps receiving undeliverable message continuously. I am seeing this wrt one such account.
Each Message Bounce has the following and landing every 15 minutes:
Your message to the following recipients cannot be delivered:
<<< No such domain.
I checked the maillog file and yes indeed. A mail to yahoo account from this account bounced back with following error:
554 delivery error: dd Sorry your message to email@example.com cannot be delivered. This account has been disabled or disco...
and then started this loop. I disabled the AR for the sender account and this loop stopped. Any clues.