How To Install exim4-daemon-light on Ubuntu 18.04
Introduction
In this tutorial we learn how to install exim4-daemon-light on Ubuntu 18.04.
What is exim4-daemon-light
exim4-daemon-light is:
Exim (v4) is a mail transport agent. This package contains the exim4 daemon with only basic features enabled. It works well with the standard setups that are provided by Debian and includes support for TLS encryption and the dlopen patch to allow dynamic loading of a local_scan function.
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-daemon-light on Ubuntu 18.04. 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-daemon-light 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-daemon-light using apt-get by running the following command:
sudo apt-get -y install exim4-daemon-light
Install exim4-daemon-light Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install exim4-daemon-light using apt by running the following command:
sudo apt -y install exim4-daemon-light
Install exim4-daemon-light 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 Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install exim4-daemon-light using aptitude by running the following command:
sudo aptitude -y install exim4-daemon-light
How To Uninstall exim4-daemon-light on Ubuntu 18.04
To uninstall only the exim4-daemon-light package we can use the following command:
sudo apt-get remove exim4-daemon-light
Uninstall exim4-daemon-light And Its Dependencies
To uninstall exim4-daemon-light and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove exim4-daemon-light
Remove exim4-daemon-light Configurations and Data
To remove exim4-daemon-light configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge exim4-daemon-light
Remove exim4-daemon-light configuration, data, and all of its dependencies
We can use the following command to remove exim4-daemon-light configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge exim4-daemon-light
References
Summary
In this tutorial we learn how to install exim4-daemon-light package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
