https://www.ndrs.org/home
Original Home | NDRS
original homendrs
https://www.iorad.com/player/1676313/In-Exchange-Online--add-remote-domain-abccorp-com--Dont-allow-replies-or-NDRs
In Exchange Online, add remote domain abccorp.com. Dont allow replies or NDRs
Check out this tutorial on iorad.com
exchange onlineaddremotedomaindont
https://jeffpar.github.io/kbarchive/kb/157/Q157703/
Q157703: XFOR: NDRs Sending Mail Using Email.dot | KnowledgeBase Archive
An Archive of Early Microsoft KnowledgeBase Articles
sending mailndrsusingemaildot