How To Install vrfy on Kali Linux

In this tutorial we learn how to install vrfy on Kali Linux. vrfy is verify electronic mail addresses

Introduction

In this tutorial we learn how to install vrfy on Kali Linux.

What is vrfy

vrfy is:

‘vrfy’ is a tool to verify e-mail addresses and mailing lists. In its simplest form it takes an address “user@domain”, figures out the MX hosts for “domain”, and issues the SMTP command VRFY at the primary MX host (optionally all), or at “domain” itself if no MX hosts exist. Without “domain” it goes to “localhost”.

More complex capabilities are:

  • recursively expanding forward files or mailing lists,
  • detecting mail forwarding loops,
  • understanding full-blown RFC822 address specifications,
  • syntax checking that can be carried out either locally or remotely,
  • various options provided to exploit alternative protocol suites if necessary, and to print many forms of verbose output.

Obvious limitations exist (mostly due to a lousy VRFY command implementation on some hosts), but otherwise, it works pretty well.

There are three methods to install vrfy on Kali Linux. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install vrfy Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install vrfy using apt-get by running the following command:

sudo apt-get -y install vrfy

Install vrfy Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install vrfy using apt by running the following command:

sudo apt -y install vrfy

Install vrfy Using aptitude

If you want to follow this method, you might need to install aptitude on Kali Linux first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install vrfy using aptitude by running the following command:

sudo aptitude -y install vrfy

How To Uninstall vrfy on Kali Linux

To uninstall only the vrfy package we can use the following command:

sudo apt-get remove vrfy

Uninstall vrfy And Its Dependencies

To uninstall vrfy and its dependencies that are no longer needed by Kali Linux, we can use the command below:

sudo apt-get -y autoremove vrfy

Remove vrfy Configurations and Data

To remove vrfy configuration and data from Kali Linux we can use the following command:

sudo apt-get -y purge vrfy

Remove vrfy configuration, data, and all of its dependencies

We can use the following command to remove vrfy configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge vrfy

Dependencies

vrfy have the following dependencies:

References

Summary

In this tutorial we learn how to install vrfy package on Kali Linux using different package management tools: apt, apt-get and aptitude.