Postfix server is mail server which is used to send emails from server or system. It is popular free and Open source
It is popular free and Open source Mail Transfer Agent[MTA] which can be used to send and receive an email from a Linux system.
In this article, I am going to demonstrate you how to Install Postfix server on a Linux system.
Before starting the installation process of Postfix you need to remove default Sendmail server from the system.
Use below command to remove send mail.