Tutorial: Installing Simple NixOS Mailserver on NixOS Latest

This tutorial will guide you through the process of installing Simple NixOS Mailserver on NixOS Latest. Simple NixOS Mailserver is a mail server system that is easy to set up and maintain. This guide aims to provide simple step-by-step instructions to help you configure and install Simple NixOS Mailserver.

Prerequisites

• NixOS Latest installed on your system. You can download it from the official NixOS website.
• Basic knowledge of the command line interface (CLI).

Step 1: Clone the Simple NixOS Mailserver

Clone the Simple NixOS Mailserver repository from GitLab using the following command:

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

This will download the repository into your local machine.

Step 2: Create a NixOS configuration file

In order to configure Simple NixOS Mailserver, create a new NixOS configuration file by running the following command:

$ sudo nano /etc/nixos/configuration.nix

This will open a text editor where you can edit the file. Copy and paste the following configuration to the file:

{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
      # Import the NixOS modules used by Simple NixOS Mailserver.
      /path/to/nixos-mailserver/mailserver.nix
    ];

  # Configure simple-nixos-mailserver
  # Use your own hostname here
  mailserver = {
    hostname = "example.com";
    postmaster = "[email protected]";
    # Set up TLS
    tls = {
      enable = true;
      certFile = "/path/to/cert.pem";
      keyFile = "/path/to/key.pem";
    };
    # Set up users
    users = [
      {
        # User 1
        username = "user1";
        password = "password1";
        maildirs = [ "/path/to/user1/maildir" ];
      },
      {
        # User 2
        username = "user2";
        password = "password2";
        maildirs = [ "/path/to/user2/maildir" ];
      }
    ];
  };
}

Replace example.com with your own domain name, and set the postmaster email to the address that you want to use as the postmaster for your mail server. Also, make sure to update the paths to the certificate and key files to match your own system. Finally, add one or more users to specify the accounts that you want to create.

Save and close the file when you're done.

Step 3: Build and install the configuration

Once you have created the NixOS configuration file, run the following command to build and install the configuration:

$ sudo nixos-rebuild switch

This will take a few minutes to complete.

Step 4: Verify the installation

To verify that Simple NixOS Mailserver has been installed correctly, you can run the following command:

$ systemctl status dovecot exim4

This will show you the status of the two components of the mail server. If both components are running without any errors, then the mail server has been installed successfully.

Conclusion

That's it! You have now successfully installed Simple NixOS Mailserver on NixOS Latest. You can now start sending and receiving emails using your new mail server.