Is there any way to change the message on the "Delivery has failed to these recipients or groups:"
If the User does not exist on my Exchange server, i want to reply with another message.
Or If the User has left the company, is there a way to delete the user account and have the email reply stating that he/she no longer works there?
The e-mail address you entered couldn't be found. Please check the recipient's e-mail address and try to resend the message. If the problem
continues, please contact your helpdesk.