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.
Before installing OpenSMTPD, you need to ensure that your system meets the following prerequisites:
Follow the steps below to install OpenSMTPD on your MXLinux Latest system:
Before installing any package on MXLinux Latest, it's crucial to update the system packages.
sudo apt update
sudo apt upgrade
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.
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.
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" user@domain.com
Replace user@domain.com 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!
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