Office365 – Exchange Error: ‎550 5.7.520 Access denied


Lors de la configuration d’une redirection vers un contact externe, l’email n’est pas délivré et l’erreur suivante est obtenue :

Office 365 received the message that you specified, but couldn’t deliver it to the recipient (‎xxxx@xxxx.xx‎) due to the following error:

Error: ‎550 5.7.520 Access denied, Your organization does not allow external forwarding. Please contact your administrator for further assistance. AS(7555)‎

A non-delivery report (NDR) message was sent to ‎‎. The NDR might provide more details about why the email message wasn’t delivered and how to fix the issue.

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