OpenSMTPD is a free and open-source SMTP server that provides a secure environment for sending and receiving emails. It is lightweight and easy to configure, making it an ideal option for small to medium-sized businesses. In this tutorial, we will learn how to install OpenSMTPD on Linux Mint.
Before we begin, make sure that you have the following:
Follow the steps to install OpenSMTPD on your Linux Mint system:
Open a terminal and enter the following command to install OpenSMTPD:
sudo apt-get install opensmtpd
Navigate to the /etc/smtpd directory and create a new configuration file:
cd /etc/smtpd
sudo nano smtpd.conf
Paste the following configuration in the file:
pki mail.example.com certificate "/etc/ssl/certs/mail.example.com.pem"
pki mail.example.com privatekey "/etc/ssl/private/mail.example.com.key"
table aliases aliases.txt
listen on lo
listen on eth0 tls pki mail.example.com
accept from any for domain "example.com" relay
accept from any for local alias <aliases> deliver to mbox
accept from local for any relay
Save and exit the file.
Note: Make sure to replace mail.example.com with your domain name.
After configuring OpenSMTPD, you need to restart the service to make the changes take effect. Enter the following command:
sudo systemctl restart smtpd
To test OpenSMTPD, send an email to one of the users on your system:
echo "test" | mail -s "Test Email" user@example.com
You can also check the maillog to see if the email was received:
sudo tail -f /var/log/maillog
That's it! You have successfully installed and configured OpenSMTPD on your Linux Mint system. With OpenSMTPD, you now have a secure and reliable SMTP server for your business needs.
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