Hi all, i have a scenario where I auto reply to an external source for testing purposes. The external source adds a custom X header,
The autofoward rule on the mailbox works fine but it seems on the email hits the hub transport store driver it removes the custom X header.
Can this be changed?
I have been through this article and proved the store driver on the Hub transport is the issue.
Please run Set-TransportConfig –HeaderPromotionModeSetting MustCreate to see if this works.
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