What Is Reverse DNS and Why You Might Need It

Reverse DNS (rDNS) maps an IP address back to a domain name. It's mostly used for email server verification.

Having rDNS set up helps prevent your emails from landing in spam folders.

Many hosting providers support rDNS for VPS and dedicated servers. Setup guides are available at high-availability hosting.

Without rDNS, some receiving mail servers may reject your emails or flag them as suspicious.

If you're running email campaigns, enabling rDNS is a smart technical upgrade.