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Wednesday, February 29, 2012

What is "reverse DNS" and do I need it? [KB1052]

What is "reverse DNS" and do I need it? [KB1052]: "Reverse DNS is also different from forward DNS in who points the zone (domain name) to your DNS server.
With forward DNS, you point the zone to your DNS server by registering that domain name with a registrar.
With reverse DNS, your Internet connection provider (ISP) must point (or "sub-delegate") the zone ("....in-addr.arpa") to your DNS server.
Without this sub-delegation from your ISP, your reverse zone will not work.

Reverse DNS is mostly used by humans for such things as tracking where a web-site visitor came from, or where an e-mail message originated etc."

'via Blog this'

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