Installing OpenSMTPD on Void Linux

OpenSMTPD is a free open source implementation of the Simple Mail Transfer Protocol (SMTP) written in C. This tutorial will guide you through the installation of OpenSMTPD on Void Linux.

Prerequisites

Before you begin, make sure that your system meets the following prerequisites:

A running installation of the Void Linux operating system
An active internet connection

Installing OpenSMTPD

To install OpenSMTPD on Void Linux, follow the steps below:

Open the terminal on your system by pressing CTRL + ALT + T.
Update the system package index by running the following command:
```
sudo xbps-install -S
```
Install the OpenSMTPD package by running the following command:
```
sudo xbps-install -y opensmtpd
```
Once the installation is complete, you can start and enable OpenSMTPD to run at the system startup using the following commands:
```
sudo ln -s /etc/sv/opensmtpd /var/service/
sudo sv start opensmtpd
```
The above commands will create a symbolic link between the OpenSMTPD service and the run directory and start the service.
Verify that OpenSMTPD is running by checking its status using the following command:
```
sudo sv status opensmtpd
```
Once you have verified that OpenSMTPD is running, you can access the configuration files from the /etc/smtpd directory.
```
ls -l /etc/smtpd/
```
You can make modifications to the configuration files as per your requirements.

That's it! You have successfully installed and configured OpenSMTPD on your Void Linux system.