dnsmx command not found

In this troubleshooting guide we learn how to fix dnsmx command not found error message

Introduction

When you run more command in linux terminal / console, you get the following error message

dnsmx: command not found

or when using sudo you get the following error message

sudo: dnsmx: command not found

In Ubuntu dnsmx is provided by djbdns-utils package.

djbdns-utils is:

This package provides number of tools for working with DNS, that can be used to diagnose misconfigured remote servers.

dnsfilter - reverse-resolves IP addresses, converting them to host names.
dnsip, dnsipq - lookup IP addresses.
dnsmx - prints the MX records of fqdn.
dnsname - does a reverse lookup for the IP address.
dnsq - sends a non-recursive DNS query to DNS server.
dnsqr - asks for records of specified type under a the domain name
dnstrace searches for all DNS servers that can affect the resolution of records of specified type under a domain name, starting from the root server.
dnstxt - prints the TXT record of fqdn.
random-ip - print random IPv4 addresses.

This package also includes users guide to name qualification.

To fix this problem, we can install more using the command below.

sudo apt-get -y install djbdns-utils

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install djbdns-utils.

sudo apt -y install djbdns-utils

Or if you have aptitude installed you can use the following command.

sudo aptitude install djbdns-utils

In this tutorial we learn how to fix dnsmx command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.