efa-project.org

I found the configuration item in main.cf and activated it, that works.
After that postfix tries to deliver it to my Exchange-server, but Exchange does not recognize the recipient.
Is there a way to get the mail to <user>+extratext@<mydomain.com> delivered (instead of creating an alias for every additional emailaddress I want?

For now I used in main.cf and
put in the maps-file.

That is how you do it.

Decent explanation here.

https://fvdm.com/code/plus-address-forw ... in-postfix

Found that too, it was what made it work

I was hoping Exchange was able to work in a similar way, but unfortunately it is not (yet) possible (if I recall correctly they have something like this planned for Q3 2020).
It would have made it easier to use rules in Exchange/Outlook...
You can change/add transport rules in Exchange, but the email is rejected because of the address before it gets to the transport rules..

I'll stick to this for now