Exchange Online: route internal messages via Exchange on-premises

Steel Contributor

Does anyone know if it's possible to route all Exchange Online internal messages (ie messages sent between two mailboxes located in Exchange Online) via Exchange On-premises prior to delivery? I assume this isn't possible as it's using local delivery, but I thought I'd ask the wider community to find out if I'm missing something.

1 Reply

Yeah, it's local delivery so even with centralized transport enabled, it will still deliver the messages directly. Perhaps you can set up something with conditional routing/mail flow rules, but I haven't played with this specific scenario.