How to Install OpenSMTPD on MXLinux Latest

OpenSMTPD is a free, open-source implementation of the Simple Mail Transfer Protocol (SMTP) created by OpenBSD developers. In this tutorial, you will learn how to install OpenSMTPD on MXLinux Latest.

Prerequisites

Before installing OpenSMTPD, you need to ensure that your system meets the following prerequisites:

  • A non-root user with sudo privileges
  • MXLinux Latest installed on your system
  • A stable internet connection

Installation

Follow the steps below to install OpenSMTPD on your MXLinux Latest system:

Step 1: Update System Packages

Before installing any package on MXLinux Latest, it's crucial to update the system packages.

sudo apt update
sudo apt upgrade

Step 2: Install OpenSMTPD

Now, let's install OpenSMTPD using the following command below:

sudo apt install opensmtpd

After the installation is complete, you can check whether the service is running using this command:

sudo systemctl status opensmtpd

If the status of the service is 'active', then the installation was successful.

Step 3: Configure OpenSMTPD

Once you've installed OpenSMTPD, you need to configure it to start sending and receiving emails.

To do that, you need to edit the configuration file located at /etc/smtpd/smtpd.conf

sudo nano /etc/smtpd/smtpd.conf

Here's an example of the basic configuration:

listen on eth0

accept from any for domain example.com
    relay via smtp.example.com

accept from local for any relay

The above example states that OpenSMTPD listens on the eth0 interface and accepts emails coming from any domain that matches example.com and relays them via smtp.example.com. It also accepts emails coming from the local MXLinux Latest system and relays them to any recipient.

After making changes to the smtpd.conf file, save and exit the editor.

Step 4: Reload and Test OpenSMTPD

To apply the changes to the OpenSMTPD configuration, you need to reload the service using the command below:

sudo systemctl reload opensmtpd

Now, you can test whether you can send and receive email using the OpenSMTPD server:

echo "This is a test email" | mail -s "Hello World" [email protected]

Replace [email protected] with your recipient email address.

If everything is properly configured, you should receive an email with the subject "Hello World."

Congratulations! You've successfully installed and configured OpenSMTPD on your MXLinux Latest!