When postfix can't deliver a message it will keep retrying for up to 5
days. When this happens an email is sent back to the sender that says
the email was delayed and will be retried. On some of my systems the
sender and recipient are the same address (for various reasons) and
this email about the message being retried creates a bit of a feedback
loop. Does anyone know how to configure postfix to not send the message
to the sender that the email is delayed?

Thanks,
Jon