Remote Domain not forwarding

[TechMonkey]

Hi all, having fun with email forwarding. We have auto-forwarding blocked generally and now trying to get one mailbox able to forward to an external address. I have set the auto-forward on the mailbox and added a remote domain that allows auto-forwarding. I still get a drop response with the code:

Reason: [{LED=250 2.1.5 RESOLVER.FWD.Forwarded; recipient forwarded};{MSG=};{FQDN=};{IP=};{LRT=}]

Everything I can find says to fix that error I need to setup a Remote Domain. But I have!

 

Any ideas what I am missing?

[georgeescott]

Have you checked your outbound spam filter policy?

We block it by default then assign a custom outbound spam filter policy to mailboxes that need it allowed.

https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/outbound-spam-policies-external-email-forwarding

[TechMonkey]

Yep, created a new outbound spam policy applied to only that mailbox and get the same. Really frustrating!

[TechMonkey]

Found the issue. MS documentation and reality do not match. Specific remote domains should override the default remote domain settings or less specific entries, as stated here. It doesn't.

 

Currently turned off the forwarding block, but put a ticket into MS.

 

We shall see.