Question

How to setup custom MAIIL FROM Domain also known as envelope sender in postfix

Hi I have installed postfix and configured it using this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-20-04

The only problem is that I cant set a custom MAIL FROM or envelope sender.
Please help me.

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alexdo • December 19, 2021

Hello there,

May I ask if what you try to achieve is to send the emails from a custom mail address like address@yourdomain.com and not be marked as sent from the server’s hostname?

If that is the case you need to add the domain in the Postfix config file - /etc/postfix/main.cf and if you want to configure forwarding as well you can add the actual forwarding in this file - /etc/postfix/virtual

  1. sammy@yourdomain.com  sammy@gmail.com

This will forward the emails from sammy@yourdomain.com to sammy@gmail.com

Hope that this helps! Regards, Alex