Need to disable forwarding for all users on Office 365 with some exceptions

Hello Test SharePoint,

Trying to disable forwarding is always a pain in the butt when you are just going through the settings. Users can forward a number of ways (through the admin portal, through owa, through their outlook, etc).

So turning one of the options off does not by any means cover you from the others.

The best way I have found to approach this problem is the following - https://blogs.technet.microsoft.com/exovoice/2017/12/07/disable-automatic-forwarding-in-office-365-and-exchange-server-to-prevent-information-leakage/

It goes through the various ways you need to prevent forwarding. In essence you need to turn it off in Powershell, then remove the options from OWA to prevent users from doing it.

Additionally be aware, this does not cover the users local outlook.

Goodluck!
Adam