How to Install Maddy Mail Server on OpenBSD

Maddy is a simple and fast mail server that can run on various platforms including OpenBSD. This tutorial will guide you through the process of installing Maddy on OpenBSD.

Prerequisites

  • OpenBSD installed on your system
  • Basic knowledge of command-line interface (CLI) operations and text editor

Installation

  1. Open a terminal window on your OpenBSD system.

  2. Install the required packages by running the following command:

sudo pkg_add go git
  1. Clone the Maddy repository from GitHub:
git clone https://github.com/foxcpp/maddy.git
  1. Change to the Maddy directory:
cd maddy
  1. Build the Maddy binary:
go build -o maddy ./cmd/maddy
  1. Copy the maddy binary to /usr/local/bin:
sudo cp maddy /usr/local/bin
  1. Create a new system user for the Maddy mail server:
sudo useradd -r -s /sbin/nologin -d /var/empty maddy
  1. Create a new configuration file for your Maddy mail server:
sudo mkdir /etc/maddy
sudo touch /etc/maddy/maddy.conf
  1. Edit the Maddy configuration file using your preferred text editor:
sudo vi /etc/maddy/maddy.conf
  1. Copy and paste the following content into the file:
module_load_dir = "/usr/local/libexec/maddy"

log_file = "/var/log/maddy.log"

listen = [
    ":25",
    ":587",
    ":465",
]

auth_http_endpoint = "http://localhost:8080/"

tls_certificate = "/etc/ssl/maddy.crt"
tls_private_key = "/etc/ssl/maddy.key"

mailboxes {
    storage_backend = "maildir"
    storage_path = "/var/maddy"
}

protocols = ["smtp", "submission", "smtps"]

  1. Save and close the file.

  2. Create the required directories:

sudo mkdir /var/log/maddy
sudo chown maddy:maddy /var/log/maddy
sudo mkdir /var/maddy
sudo chown maddy:maddy /var/maddy
  1. Generate a self-signed SSL certificate for your Maddy mail server:
sudo openssl req -new -newkey rsa:4096 -x509 -sha256 -days 365 -nodes -out /etc/ssl/maddy.crt -keyout /etc/ssl/maddy.key
  1. Start the Maddy mail server:
sudo -u maddy maddy -config /etc/maddy/maddy.conf

Congratulations! You have successfully installed and configured Maddy mail server on your OpenBSD system.