I would like to disable NDRs. I have unchecked "Allow non-delivery reports" under ESM -> Internet Message Format -> Default Properties -> Advanced tab.
I then restarted the SMTP and MS Exchange Routing Engine Services.
If I send an internal email to a non-existent account, I still get an NDR:
Your message did not reach some or all of the intended recipients.
Subject: test
Sent: 3/06/2008 12:05 PM
The following recipient(s) cannot be reached:
nonuser@domain.com on 3/06/2008 12:05 PM
The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address.
<mailserver.domain.com #5.1.1>
What have I done wrong?
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