Microsoft 365 Exchange online 550 5 7 520 external forwarding fix

SOLVED: VIDEO: Microsoft Exchange Online 550 5.7.520 Access Denied Organization Does Not Allow External Forwarding

If a user is receiving a 550 5.7.520 email bounce relating to External Forwarding.  The problem is likely related to the default Microsoft Office 365 Exchange Online Exchange Online Protection Anti Spam filters. Delivery has failed to these recipients or groups: <User> (<user email>) Your message wasn’t delivered because the Read more…