Fix 5.7.520 Access denied, Your organization does not allow external forwarding

Ndr 5.7.520 Access denied, Your organization does not allow external forwarding. Please contact your administrator for further assistance. AS(7555) fix As an admin, you might have company requirements to restrict or control automatically forwarded messages to external recipients (recipients outside of your organization). Email forwarding can be a useful, but can also pose a security risk due to the potential disclosure of information. Attackers might use this information to attack your organization or partners. The following types of automatic forwarding are available in Microsoft 365: Users can configure Inbox Rules to automatically forward messages to external senders (deliberately or as a result of a compromised account). Admins can configure mailbox forwarding (also known as SMTP forwarding) to automatically forward messages to external recipients. You can use outbound spam filter policies to control automatic forwarding to external recipients. Three settings are available: Automatic: Automatic external forwarding is blocked. Internal automatic forwarding of messages will continue to work. This is the default setting. On: Automatic external forwarding is allowed and not restricted. Off: Automatic external forwarding is disabled and will result in a non-delivery report (also known as an NDR or bounce message) to the sender.