Please forward steps to remedy the following message I'm getting while using Office 365 / Outlook. Nothing has changed - no settings have changed:
Delivery has failed to these recipients or groups: @.com Your message wasn't delivered because the recipient's email provider rejected it. Diagnostic information for administrators: Generating server: SN6PR0102MB3373.prod.exchangelabs.com @*.com Remote Server returned '550 5.7.520 Access denied, Your organization does not allow external forwarding. Please contact your administrator for further assistance. AS(7555)'