We had some DSN mails queueing up on our Exchange server's outgoing queue with error 450 4.7.1 and i was trying to figure out what were those mails in the first place. The Subject in all those mails looked like spam and since the From Address was empty, it got me kinda worried and curius at the same time. Using Queue Viewer wasn't helpfull since I couldn't see the origin of the DSN message. I had to use Exchange Management Shell to find out more info.
In order to view the email contents so that you can check the body and find out more information about the cause/source of the DSN, you need to know the message Identity, suspend the message's from processing and then export it.
In order to view the email contents so that you can check the body and find out more information about the cause/source of the DSN, you need to know the message Identity, suspend the message's from processing and then export it.
