A PTR record, also recognized as a reverse DNS record, establishes a connection between an IP address and a domain name, which is the reverse of the function performed by an A record.
PTR records provide the capacity to conduct a reverse DNS lookup, facilitating the verification of whether a provided IP address corresponds to a specific domain or hostname.
Having a PTR record configured will enable your website to be resolved in both directions—namely, from a domain name to an IP address through an A record, and from an IP address to a domain name via a PTR record. This comprehensive resolution capability contributes to establishing a reliable reputation for your online presence during external DNS lookups.
Moreover, the reverse DNS record serves a pivotal role in preventing SPAM during email delivery by aiding in the verification of the legitimacy of the outbound email server.
Through the establishment of a PTR record for an IP address, you introduce an additional layer of traceability to the source of an email, thereby enhancing the credibility of the email server itself.
The incorporation of a PTR record is further imperative due to the fact that certain incoming mail servers will outright decline to accept messages originating from an IP address that lacks identification via a PTR record within a reverse DNS zone.
As a standard practice, we don't automatically allocate a reverse DNS record to a newly assigned dedicated IP address for your web hosting account.
Nevertheless, you have the flexibility to input a custom value into the 'Not Set' field whenever you wish. This action will create a reverse DNS zone for your dedicated IP address.
Typically, PTR records need to be entered in a specific format, wherein you begin with a reversed segment of your IP address, followed by .in-addr.arpa.
To simplify this process, we've streamlined the required formatting automatically in the background. Consequently, your only task will be to provide the hostname to which the IP address is linked within the PTR Record field.