At my company our ticketing system pulls from dedicated mailboxes, but when an email is sent from one of them due to some automated process or other and fails it of course throws an NDR. The problem is that those NDRs trigger new tickets. What I want to do is redirect all of the NDRs from our various departments to a central inbox so they stop hitting those other inboxes at all and triggering unnecessary tickets. I want them redirected instead of summarily deleted so that we can update the ones that are just typos and such and have records of at least trying to send them.
At first I tried just setting up a mail flow rule that diverts anything with "Undeliverable" in it, but that routed a few false positives because it searches the subject and the body, and didn't catch the test emails I was sending anyway. My searching found several threads on how to disable NDRs through Outlook or instructions on how to modify NDRs for incoming mail, but the closest thing I found to help for my particular situation was a note for Exchange 2013 saying that since NDRs are considered system messages mail flow rules are basically worthless.
Is there a setting somewhere I'm missing or is it just impossible to do anything with outbound NDRs domain-wide?
Best Answer
Connect to Exchange Online via Powershell and run
Would set it to a shared mailbox address and assign rights to it from your helpdesk/support mailbox for visibility.
You can also set it to $null and not receive any NDRs which is the default setting
Further reading on the Set-TransportConfig command