I want to set up a postfix server that relays emails to another email address.
I have an ubuntu server set up, a domain name (myvps.be) and a database of users. I want to make it so that when someone sends a mail to email@example.com it is relayed to the users personal mail. Postfix doesn't has to be connected to the database, I can do this with a config file. I would like to do this as simple as possible.
I have already found several tutorials, but all of the require authentication or other things I don't want.
Is there a tutorial or someone who knows how to do this? It doesn't have to be postfix either, I just want this to work.