X-Envelope-To / X-Original-To Header for mail archive

thanks for the help
yes, but a few questions are still open.

how do i update the templates?
i made changes on thursday, which were also present in the main.cf today. however, i don’t know why and didn’t manage to update them directly on thursday.

I still don’t know how to adjust the headers for outgoing mails?

I think I’ll make a new post about this and then link both solutions.