Technical Details for Auto-Reply Exceptions
- Joe User sets up Exchange's auto-reply feature on his account.
- Joe User receives a message from an e-list.
- Exchange dutifully sends the auto-reply to the reply-to address specified.
This auto-reply doesn't do anybody any good. In fact, it might trigger additional automated messages and, depending on the way the list is configured, may automatically unsubscribe Joe User.
If a message includes this header
X-Auto-Response-Suppress: OOF, DR, RN, NRN
Exchange will suppress Out of Office responses for that message, regardless of the settings in place for any individual account.
CIT has created a rule on its Exchange server that checks each incoming message for any of these common list headers:
If the message has any of these headers, we append the "X-Auto-Response-Suppress: OOF, DR, RN, NRN" header, and poof, no auto-reply.
Anyone maintaining other mailing systems at Cornell, such as ticketing systems, can also use the "X-Auto-Response-Suppress: OOF, DR, RN, NRN" header to suppress auto-replies from Exchange users.
Note that some list managers use a different header "Precedence: bulk", which has the same effect.