This post is part of my Your own Virtual Private Server hosting solution project.
Get the latest version of this article here: https://gist.github.com/janikvonrotz/b6bbaee6433e5d4d2771.
Postfix is a commonly used MTA (Mail Transfer Agent) program that can receive, deliver or route emails. In this guide you’ll learn how to forward mails from a certain domain to another e-mail address. It’s a recommanded approach if you want to publish a mail contact based on your domain and redirect the received mails to another provider, such as Outlook or Gmail.