How To Install postfix-mta-sts-resolver on Ubuntu 20.04
Introduction
In this tutorial we learn how to install postfix-mta-sts-resolver
on Ubuntu 20.04.
What is postfix-mta-sts-resolver
postfix-mta-sts-resolver is:
postfix-mta-sts-resolver provides a lookup daemon and command line query utility for MTA-STS policies (RFC 8461). The daemon provides TLS client policy to Postfix via socketmap.
There are three methods to install postfix-mta-sts-resolver
on Ubuntu 20.04. 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-mta-sts-resolver 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-mta-sts-resolver
using apt-get
by running the following command:
sudo apt-get -y install postfix-mta-sts-resolver
Install postfix-mta-sts-resolver Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install postfix-mta-sts-resolver
using apt
by running the following command:
sudo apt -y install postfix-mta-sts-resolver
Install postfix-mta-sts-resolver 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-mta-sts-resolver
using aptitude
by running the following command:
sudo aptitude -y install postfix-mta-sts-resolver
How To Uninstall postfix-mta-sts-resolver on Ubuntu 20.04
To uninstall only the postfix-mta-sts-resolver
package we can use the following command:
sudo apt-get remove postfix-mta-sts-resolver
Uninstall postfix-mta-sts-resolver And Its Dependencies
To uninstall postfix-mta-sts-resolver
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove postfix-mta-sts-resolver
Remove postfix-mta-sts-resolver Configurations and Data
To remove postfix-mta-sts-resolver
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge postfix-mta-sts-resolver
Remove postfix-mta-sts-resolver configuration, data, and all of its dependencies
We can use the following command to remove postfix-mta-sts-resolver
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge postfix-mta-sts-resolver
References
Summary
In this tutorial we learn how to install postfix-mta-sts-resolver
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.