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EXCH
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Q:
reverse lookup zone
DNS, Reverse Lookup
what is the use of reverse lookup zone
ASKED: Jul 7 2008  12:18 AM GMT
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Labnuke99
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A:
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A DNS zone which provides for a resource record that resolves an IP address to its corresponding fully qualified domain name.
Last Answered: Jul 7 2008  12:38 AM GMT by Labnuke99   26375 pts.
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CosmoC   280 pts.  |   Jul 8 2008  7:30PM GMT

The reverse lookup zone was originally used for network troubleshooting (ping, traceroute, dig, etc). For external DNS (especially mail servers) reverse lookups are essential. Most ISP/Hosting services rely on reverse lookups for anti-spam techniques.

Active Directory does not require reverse lookups but without them clients may not be able to fully resolve host names. Some will argue that adding reverse lookups (PTR records) to an Active Directory Integrated zone will slow your DNS query’s. I have not found this to be true.

 

reverselookup   0 pts.  |   Jul 24 2008  8:45PM GMT

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