Message Header.

Microsoft Q & A 381

I have an email sent to multiple user. I have cross checked message id is same for them, which is default behavior. But just want to confirm why we have below 2 differences in the header.

For some users :

X-MS-Exchange-CrossTenant-FromEntityHeader : HybridOnPrem

X-OriginatorOrg : having a value

X-MS-Exchange-Organization-MessageDirectionality Originating

===========================================

For some users.

X-MS-Exchange-CrossTenant-FromEntityHeader : Internet

X-OriginatorOrg : this one is missing in header

X-MS-Exchange-Organization-MessageDirectionality: Incoming

Nobuko Ichimaru 316 Reputation points

2023-06-03T13:24:25.2166667+00:00

sorry, as a mere comment.
It seems to be a hybrid use of cloud and on-premises.

Also, there may be influences such as the device at the time of reception and the connection type.

Please refer to here.

Transport routing in Exchange hybrid deployments

https://learn.microsoft.com/en-us/exchange/transport-routing
Dezhi Li-MSFT 780 Reputation points

2023-06-13T09:56:29.73+00:00

Hi @Microsoft Q & A,

I am checking the status of this case. Please let us know if you would like further assistance.
Meanwhile, if the reply is helpful to you, we will convert it into an answer, and please try to mark it as an answer, it will help others who encounter the same issue and read this thread.
Thank you for your understanding and patience!

Best Regards,

Dezhi