Exim is a widely used Mail Transfer Agent (MTA) for Unix-like operating systems, and it's free and open-source. In this tutorial, we will learn how to install Exim on Linux Mint.
Before starting, you need to ensure that you have the following:
It's always a good practice to have the latest package list before installing anything. To update the package list, open a terminal window and run the following command:
sudo apt-get update
Now that we have updated our package list, we can install Exim by running the following command:
sudo apt-get install exim4
This command will install the Exim package along with its dependencies.
After we have installed Exim, we need to configure it. The default configuration file of Exim is located at /etc/exim4/update-exim4.conf.conf. It's recommended to take a backup of this file before making any changes to it.
sudo cp /etc/exim4/update-exim4.conf.conf /etc/exim4/update-exim4.conf.conf.orig
Now, open the /etc/exim/update-exim4.conf.conf file in your preferred editor and edit the following sections as needed:
DCconfig_internet: This section defines how Exim should handle connections to the internet. Make sure that the dc_local_interfaces option is set to the IP addresses or hostnames of your server.
DCeximconfig_configtype: This section defines the configuration type used by Exim. Set it to internet for a basic internet-facing mail server.
DCsmarthost: If you plan to relay outgoing emails through a third-party email service, you can configure it in this section.
Once you have made the necessary changes, save the file and close your editor.
Finally, we need to restart Exim to apply the new configuration. Run the following command:
sudo service exim4 restart
In this tutorial, we learned how to install and configure Exim on Linux Mint. Exim is a powerful and flexible MTA that can handle a high volume of email traffic. With the proper configuration, Exim can become a reliable email server for your organization.
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