How To Install exim4 on Debian 11
Introduction
In this tutorial we learn how to install exim4 on Debian 11.
What is exim4
exim4 is:
Exim (v4) is a mail transport agent. exim4 is the metapackage depending on the essential components for a basic exim4 installation.
The Debian exim4 packages have their own web page, http://wiki.debian.org/PkgExim4. There is also a Debian-specific FAQ list. Information about the way the Debian packages are configured can be found in /usr/share/doc/exim4-base/README.Debian.gz, which additionally contains information about the way the Debian binary packages are built. The very extensive upstream documentation is shipped in /usr/share/doc/exim4-base/spec.txt.gz. To repeat the debconf-driven configuration process in a standard setup, invoke dpkg-reconfigure exim4-config. There is a Debian-centered mailing list, [email protected]. Please ask Debian-specific questions there, and only write to the upstream exim-users mailing list if you are sure that your question is not Debian-specific. You can find the subscription web page on http://lists.alioth.debian.org/mailman/listinfo/pkg-exim4-users
There are three methods to install exim4 on Debian 11. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install exim4 Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install exim4 using apt-get by running the following command:
sudo apt-get -y install exim4
Install exim4 Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install exim4 using apt by running the following command:
sudo apt -y install exim4
Install exim4 Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install exim4 using aptitude by running the following command:
sudo aptitude -y install exim4
How To Uninstall exim4 on Debian 11
To uninstall only the exim4 package we can use the following command:
sudo apt-get remove exim4
Uninstall exim4 And Its Dependencies
To uninstall exim4 and its dependencies that are no longer needed by Debian 11, we can use the command below:
sudo apt-get -y autoremove exim4
Remove exim4 Configurations and Data
To remove exim4 configuration and data from Debian 11 we can use the following command:
sudo apt-get -y purge exim4
Remove exim4 configuration, data, and all of its dependencies
We can use the following command to remove exim4 configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge exim4
Dependencies
exim4 have the following dependencies:
References
Summary
In this tutorial we learn how to install exim4 package on Debian 11 using different package management tools: apt, apt-get and aptitude.