Hi,
I have followed the article and removed anonymous from ms-Exch-Send-Headers-Routing: https://practical365.com/exchange-server/remove-internal-exchange-server-names-ip-addresses-message-headers/
I checked and verified that Anonymous Logon is not listed but when an NDR email comes back it still shows our Exchange server name and IP address.
We have restarted the Transport services but the information still shows. What other settings can we change to remove this information from the NDR email?
Thank you,
Nathan
Consultant