How do we prevent a bounce back loop when automatically sending email notifications? A user emails us or submits a ticket. An automated response is sent to the users email address. Their mail server does not recognize the email address for whatever reason and bounces it back. When the bounced message comes in the system apparently thinks its a new ticket submission and an automated response is sent again. Bounces again. And so on. This actually happened to us and we ended up with 1400 bounced emails in our ticket queue.