Install vmm-doc by entering the following commands in the terminal:
sudo apt update sudo apt install vmm-doc
Description:
Documentation for the Virtual Mail Manager
Virtual Mail Manager is a command-line tool for administrators/postmasters to manage (alias-)domains, accounts, aliases and relocated users. It is designed for Dovecot and Postfix with a PostgreSQL backend. . This package provides the documentation for vmm, as well as the VirtualMailManager API.
Homepage: http://vmm.localdomain.org/
Version: 0.6.2-2
Section: universe/doc