You’ll need a PC that is running a current version of PowerShell. As yet, it can’t check more exotic things like direct mailbox forwarding or sweep rules, but you gotta start somewhere! It is important to note that this script does not make any changes to users or their mailboxes, it just reads and reports their mailbox rules using the Microsoft Graph.

In short, I have a new version of this script that is a single EXE file you can download and use here: I have detailed how to do all that over the period here but I still find that many struggle to make use of the PowerShell script. This mainly revolves around getting an appropriate PowerShell environment running, installing the Exchange Online PowerShell modules, connecting to Exchange Online with PowerShell and so on. This is still the most comprehensive method in my books for checking for all the various type of forwards on a mailbox and I recommend you continue to use the script which you’ll find freely available at:Īs good as that script is, there are still challenges for many people actually using it I have found. About 2 years ago I released a free PowerShell script that allowed you to check for email forwards on mailboxes in a Microsoft 365 environment.

Microsoft secure email powershell