'550 5.7.520 Access denied, Your organization does not allow external forwarding

We have a consultant that gets this error when auto forwarding mail to us that gets this message:

'550 5.7.520 Access denied, Your organization does not allow external forwarding.

Status Office 365 received the message that you specified, but couldn't deliver it to the recipient (‎[e-mail]‎) 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 ‎[e-mail]‎. The NDR might provide more details about why the email message wasn't delivered and how to fix the issue. How to fix it Ask the sender ([e-mail]) to follow the instructions in the NDR to fix this issue. The NDR might also include specific information for email admins. If the sender is unable to fix the issue, ask them to forward you the NDR and then follow the

You can allow this specific user/mailbox this way:

• Go to https://security.microsoft.com/antispam

• Select "+ Create policy" and choose "Outbound"

• Give your new outbound spam filter policy a name and description.

• Click Next and search to find the user account you want to allow to forward

• Click Next again, scroll down to the Forwarding rules section, and click the dropdown under Automatic forwarding rules. Choose On - Forwarding is enabled, then click Next.

It is possible to allow it for all in the Anti-spam outbound policy (Default) policy, but I will NOT recommend that.

---

REFERENCES

• https://learn.microsoft.com/en-us/answers/questions/1538176/550-5-7-520-access-denied-your-organization-does-n