Configuring reverse DNS records

Introduction

Reverse DNS (RDNS) is a critical component of the Domain Name System (DNS) that enables the mapping of IP addresses to server names through PTR (Pointer) records. This process helps verify the authenticity of a server and is especially crucial for email servers to ensure proper email delivery. In this guide, we’ll walk you through the steps to configure RDNS (PTR) records for your VPS or dedicated server.

Requesting RDNS PTR Records

To configure RDNS PTR records for your VPS or dedicated server, you will need to contact your hosting provider’s support team, in this case, Hostingly Support. Provide them with the following information:

  • Server IP Address: Share the specific IP address of your VPS or dedicated server for which you want to set up RDNS.

  • Fully Qualified Domain Name (FQDN): Specify the FQDN associated with your server. The FQDN typically includes the server name and your domain, like “server.example.co.uk.”

Why RDNS Matters for Email Servers

RDNS plays a vital role in email server configuration. Many remote mail servers perform RDNS lookups to ensure that the sending server’s IP address matches its domain name. This check helps prevent email spam and ensures the legitimacy of the sender’s server. If RDNS is not set up correctly or is missing, there’s a risk that some email servers may reject incoming emails from your server.

To guarantee the reliable delivery of your emails and avoid potential issues with email rejection, it is essential to have RDNS properly configured for your server’s IP address.

In summary, while configuring RDNS PTR records is a task that usually requires assistance from your hosting provider, it is crucial to ensure the smooth operation of your email server and maintain the integrity of your server’s identity on the internet.