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Re: Reverse DNS

From: Caio James
Date: Thursday, June 29, 2000
Time: 11:57:17 pm

It didn't add PTR records for all of my domains. Only a few of them. Don't
all domains need this?

Caio

> From: Caio James <caio@intric.com>
> Reply-To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
> Date: Thu, 29 Jun 2000 23:42:33 -0700
> To: QuickDNS Talk <quickdns-talk@lists.menandmice.com>
> Subject: Re: Reverse DNS
>
> OK, I just used the domain assistant to add the reverse dns to all my
> existing domains...will that do me ok for now?
>
> Caio
>
>> From: Men & Mice Support <cbuxton@menandmice.com>
>> Reply-To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
>> Date: Thu, 29 Jun 2000 23:23:21 -0700
>> To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
>> Subject: Re: Reverse DNS
>>
>> At 8:15 PM -0700 6/29/00, Caio James wrote:
>>> Reverse DNS? What is this and how do I set it up? My dns servers seem to be
>>> working fine without this, but one of my client's chat software needs
>>> reverse dns to work properly..
>>
>> Reverse records are used to map IP addresses back to names. It is
>> important for workstations and mail servers to have accurate reverse
>> (PTR) records.
>>
>> The top-level of the reverse zone system is in-addr.arpa. Subzones
>> are made using the octets of your subnet, but in reverse order. In
>> other words, if one of your IP addresses is 207.38.101.31, then its
>> PTR record is named "31.101.38.207.in-addr.arpa.". That's potentially
>> in each of the following zones:
>>
>> 101.38.207.in-addr.arpa.
>> 38.207.in-addr.arpa.
>> 207.in-addr.arpa.
>> in-addr.arpa.
>>
>> I say "potentially" because not all of those are necessarily delegated zones.
>>
>> Here's the actual delegation, starting from the top:
>>
>> from f.root-servers.net:
>> 101.38.207.in-addr.arpa. NS ns1.inno-tech.com.
>> 101.38.207.in-addr.arpa. NS ns.webdudes.com.
>>
>> from ns1.inno-tech.com:
>> The host or domain "31.101.38.207.in-addr.arpa." does not exist
>>
>> from ns.webdudes.com:
>> non-authoritative answer (lame delegation)
>>
>> So on the ns1.inno-tech.com server, there is a file for the zone
>> 101.38.207.in-addr.arpa. PTR records should be added to it until it
>> has exactly one for every IP address in use within that class C
>> subnet.
>>
>> (I used this IP address because it's the address of intric.com, the
>> domain used in your email address.)
>> ____________________________________________________________________
>> Chris Buxton cbuxton@menandmice.com
>> Men & Mice http://www.menandmice.com
>> Makers of: QuickDNS Pro



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