Replace Return-Path using Transportrule

Hi!

I'm trying to replace the Return-Path value in certain mail headers and failing badly. :(

I created a new transport rule using New-Transportrule-SetHeaderName 'Return-Path' -SetHeaderValue <new Emailaddress> but it doesn't seem to work. I also tried-RemoveHeader 'Return-Path', but also without any results.

Can someone tell me what I'm doing wrong?

We have Exchange 2016 with Edge Servers in an Exchange Hybrid. I created and tested the rule on premise and not in the cloud!

Thanks for any and all help.

Best Regards,

Gerrit

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