How to Check Postfix Version

Postfix is a popular open-source mail transfer agent (MTA) used by many organizations worldwide. It is designed to be fast, easy to administer, and highly secure. If you are running a mail server with Postfix, it is essential to know what version you are using, especially if you need to upgrade or troubleshoot an issue.

In this guide, we will show you how to check the version of Postfix installed on your server. We will cover two methods: using the command line and checking the package manager.

Method 1: Check Postfix Version Using Command Line

The first method to check the version of Postfix is by using the command line. You can use the following command:

postconf -d | grep mail_version

This command will display the version of Postfix that is installed on your server.

[root@geeks ~]# postconf -d | grep mail_version
mail_version = 2.6.6
milter_macro_v = $mail_name $mail_version

Method 2: Check Postfix Version Using Package Manager

The second method to check the version of Postfix is by using the package manager. The package manager is responsible for installing and managing software packages on your server. The method for using the package manager to check the version of Postfix may differ depending on your server’s operating system.

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For Ubuntu or Debian-based systems, you can use the following command:

apt-cache policy postfix | grep Installed

This command will display the version of Postfix that is currently installed on your server.

For Red Hat-based systems, you can use the following command:

yum info postfix | grep Version

This command will display the version of Postfix that is currently installed on your server.

Commands Mentioned:

  • postconf – command to display Postfix configuration values.
  • grep – command to search for patterns in files or output.
  • apt-cache – command to search for software package information.
  • yum – command to install, update, and remove software packages on Red Hat-based systems.
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Conclusion:

In this guide, we have shown you two methods to check the version of Postfix installed on your server. You can use the command line or package manager to obtain the version number. Knowing the version of Postfix installed on your server is important when troubleshooting issues or upgrading to a newer version. By following the steps outlined in this guide, you can easily check the version of Postfix installed on your server.

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