How To Install postfix-gld on Ubuntu 18.04
Introduction
In this tutorial we learn how to install postfix-gld on Ubuntu 18.04.
What is postfix-gld
postfix-gld is:
gld stands for GreyList Daemon. gld is a standalone policy delegation server for postfix that implements the greylist algorithm as defined at http://www.greylisting.org
There are three methods to install postfix-gld 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 postfix-gld Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install postfix-gld using apt-get by running the following command:
sudo apt-get -y install postfix-gld
Install postfix-gld Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install postfix-gld using apt by running the following command:
sudo apt -y install postfix-gld
Install postfix-gld 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 postfix-gld using aptitude by running the following command:
sudo aptitude -y install postfix-gld
How To Uninstall postfix-gld on Ubuntu 18.04
To uninstall only the postfix-gld package we can use the following command:
sudo apt-get remove postfix-gld
Uninstall postfix-gld And Its Dependencies
To uninstall postfix-gld and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove postfix-gld
Remove postfix-gld Configurations and Data
To remove postfix-gld configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge postfix-gld
Remove postfix-gld configuration, data, and all of its dependencies
We can use the following command to remove postfix-gld configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge postfix-gld
References
Summary
In this tutorial we learn how to install postfix-gld package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
