Having trouble to setup action mailbox with postfix? Read these articles to know how you can in detail. This is a two-series tutorial to setup action mailbox with postfix. Part 1 - https://thedevpost.com/blog/setup-action-mailbox-with-postfix-part-1/ Part 2 - https://thedevpost.com/blog/setup-action-mailbox-with-postfix-part-2/