Forum Discussion
Finding Forwards based upon to address
I have a distribution list that is designed to send an email to every mailbox associated with my company's domain. This distribution list only contains company generated mailboxes. When I send an ema...
There are various forms of forwarding and if you want the solution to be thorough, you have to account for all of them. I have a sample script here: https://michev.info/blog/post/4466/report-on-microsoft-365-mailbox-forwarding-all-methods-via-powershell
An easier approach might be to take a look at the Auto-forwarded messages report in the Exchange Online admin center: Auto forwarded messages report in the new Exchange admin center (EAC) in Exchange Online | Microsoft Learn
Lastly, you can run a message trace against one of the addresses in order to see how the message was delivered to them: