Reverse DNS record or PTR Record is generally used by mail servers. Usually, the server’s hostname (FQDN – Fully Qualified Domain Name) is used as a reverse DNS record. How to verify rDNS How to set Reverse DNS (rDNS/PTR Record) for IP in Vultr VPS How to set Reverse DNS on Amazon EC2. Remove Email … Continue reading rDNS / Reverse DNS / PTR Record