How to Install Simple NixOS Mailserver on Void Linux

Simple NixOS Mailserver is a lightweight and secure mailserver software package that is available on GitLab. This guide will explain how to install Simple NixOS Mailserver on a Void Linux machine.

Prerequisites

Before you begin installing Simple NixOS Mailserver, ensure that you have the following prerequisites:

A machine running Void Linux. This guide assumes that you have a fresh installation of Void Linux.
Root access to your machine.

Step 1: Install Nix Package Manager

Simple NixOS Mailserver uses the Nix package manager to manage its dependencies. To install Nix, enter the following command in the terminal:

sudo xbps-install -S nix

After the installation is complete, you will need to run the nix-daemon:

sudo systemctl start nix-daemon

Finally, add nix as a service, so that the daemon will be automatically started on boot:

sudo systemctl enable nix-daemon

Step 2: Clone Simple NixOS Mailserver

Next, you will need to clone the Simple NixOS Mailserver repository from GitLab. To do this, enter the following command:

git clone https://gitlab.com/simple-nixos-mailserver/nixos-mailserver.git

This will download the latest version of Simple NixOS Mailserver into a folder called nixos-mailserver.

Step 3: Configure Simple NixOS Mailserver

Before installing Simple NixOS Mailserver, you will need to edit the nixos-mailserver/default.nix file to configure the server according to your needs. This file contains several settings, including the domain name for the server, the SSL certificate location, and the username and password used for authentication. Make sure to edit this file and save your changes before continuing.

Step 4: Build and Install Simple NixOS Mailserver

To build and install Simple NixOS Mailserver, enter the following command:

sudo nix-env -i -f nixos-mailserver/release.nix

This will build and install the software package.

Step 5: Configure Services for Simple NixOS Mailserver

After installing Simple NixOS Mailserver, you will need to configure several services so that it will work correctly. To do this, first create the necessary configuration files:

sudo mkdir -p /etc/nixos-mailserver
sudo cp /nix/store/*/etc/nixos-mailserver/* /etc/nixos-mailserver/

Next, you will need to activate the services:

sudo systemctl enable postfix
sudo systemctl start postfix
sudo systemctl enable dovecot
sudo systemctl start dovecot
sudo systemctl enable nginx
sudo systemctl start nginx

Step 6: Verify Simple NixOS Mailserver

To make sure that Simple NixOS Mailserver is working correctly, you can open a web browser and go to https://your-domain.com. You should see a login page where you can enter your username and password.

Congratulations! You have successfully installed Simple NixOS Mailserver on your Void Linux machine.