Reverse DNS is a must, especially if you want to run your own email server. Without it, there is a high chance that the emails going out of your email server will fall straight into the SPAM folder, where they will never be seen. So, having a reliable Reverse DNS provider is a must for many. Here we have 4 Reverse DNS providers to check out. All of them offer great services at a competitive price.
Testing if you have properly set a Reverse DNS zone and PTR records inside it is a straightforward task with the built-in tool Dig command. You can see if the IP address matches the domain name with a simple DNS lookup. So let’s get into it.
The Dig command is a built-in command that you can find on any Linux distribution and serves for various DNS lookups, including a Reverse DNS lookup.
So, in a traditional Forward DNS lookup, you type a domain name, and you are searching for the IP address so you can access its content. However, the Reverse DNS lookup has another purpose. You start with the IP address, and you look at who is behind it.
For people approaching the DNS (domain name system), the Forward DNS zone is a must-stop. But what happens when it’s about going in the opposite direction? Well, there are essential differences between the Forward and Reverse DNS zones. Let’s check out if you really need to create a Reverse DNS one!
Reverse DNS, or simply for short rDNS, is a service normally included in your managed DNS plan. With it, you are able to perform reverse DNS lookups. For that purpose, it allows you to make a Reverse DNS zone and add inside it multiple PTR records. They serve you to prove that the IP addresses are associated with the domain name.