I am setting up a Postfix relay for one purpose - to add a specific email recipient to all emails being relayed through this server.
I thought that I could use always_bcc, which worked, but the bcc recipient can't see the original recipient of the email. (If they look at the email headers they can find the original recipient but not from the regular mail view in the Office 365 web client).
I was hoping that I could use some sort of recipient address rewriting in Postfix: @.* ---> @.*,firstname.lastname@example.org
The goal of this would be to allow the relayed mail to both go to the original recipient but also to be delivered to email@example.com.
Does anyone know how to do this? I certainly appreciate the help!