PTR (Pointer, Reverse DNS, rDNS) Record

The PTR (or Pointer) record is the reverse DNS lookup record. It maps your server IP address (for example, 165.227.97.17) to a domain name (for example, wpdiaries.com).

It is also called a reverse DNS (rDNS) record.

You set the PTR record at the hosting company that gives your server the IP address. Unlike A, MX, SPF, DKIM, and other DNS records, which you set on your DNS server.

The PTR record is necessary to increase the deliverability of emails sent by your server.

Please check out this article to see how to:

1. set the PTR record
2. check whether the PTR record is already set for your server's IP address.

Additional Reading:

• What Is a DNS PTR Record & What Is It Used For?
• Who manages the PTR records for my IP addresses?
• Understanding and Setting Up DNS Records: A Step-by-Step Guide