Forum Discussion
Mark Andrich
Aug 03, 2017Copper Contributor
On demand disable forwarding? OWA and Outlook?
Hello, I recently saw a video (that I can no longer find) that seemed to show that it was possible to limit forwarding "ala cart" on outgoing e-mails in a way that would disallow forwarding withi...
VasilMichev
Aug 04, 2017MVP
This is nothing new, the only new part about it is that it got included as part of the Secure Score recommendations/actions: https://blogs.technet.microsoft.com/office365security/mitigating-client-external-forwarding-rules-with-secure-score/
Here's the actual rule syntax: IF The Sender is located ‘Inside the organization’ AND IF The Recipient is located ‘Outside the organization’ AND IF The message type is ‘Auto-Forward’ THEN Reject the message with the explanation ‘External Email Forwarding via Client Rules is not permitted’