 |  |
Allright...
Re: Reverse DNS
From: Caio James
Date: Thursday, June 29, 2000
Time: 11:42:19 pm
well...the whole reason I'm asking is that I've got my own dns servers
running right now...I think I understand, but I'm not sure...so let me see
if I can do this...
my primary dns here is vlade.intric.com (63.105.166.21) and my secondary is
peja.intric.com (63.105.166.16)
I need to create a zone called 166.105.63.in-addr.arpa on the 'vlade'
server. Then in that zone, I need to create PTR records with all of the 4th
bit numbers (in my case, 2-128). and point them to the appropriate domain...
so, I create a ptr record: 54 PTR mail.yeat.com (for example.)
is that right?
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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