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Re: Setting Up Reverse DNS Query

From: Stuart Douglas
Date: Friday, January 21, 2005
Time: 8:51:36 am

Thanks Chris - that worked.

The problem I have now is that I still don't have the mail server reverse
DNS set up right :

"Asking a.root-servers.net for 82.233.20.212.in-addr.arpa PTR record:
a.root-servers.net says to go to auth03.ns.uu.net. (zone:
212.in-addr.arpa.)
Asking auth03.ns.uu.net. for 82.233.20.212.in-addr.arpa PTR record:
auth03.ns.uu.net [198.6.1.83] says to go to ns0.ednet.co.uk. (zone:
233.20.212.in-addr.arpa.)
Asking ns0.ednet.co.uk. for 82.233.20.212.in-addr.arpa PTR record: Got
CNAME referral to ns2.pdq.net. (zone
82.233.20.212.in-addr.groovychocolate.com.) [from 212.20.226.130]
Asking ns2.pdq.net. for 82.233.20.212.in-addr.groovychocolate.com. PTR
record:
ns2.pdq.net [204.145.251.2] says to go to ns.groovychocolate.com.
(zone: groovychocolate.com.)
Asking ns.groovychocolate.com. for
82.233.20.212.in-addr.groovychocolate.com. PTR record: Reports that no PTR
records exist [from 212.20.233.82].

Answer:
No PTR records exist for 212.20.233.82. [Neg TTL=86400 seconds]

Details:
ns.groovychocolate.com. (an authoritative nameserver for
groovychocolate.com., which is in charge of the reverse DNS for
212.20.233.82)
says that there are no PTR records for 212.20.233.82. (from
http://www.dnsstuff.com/tools/ptr.ch?ip=212.20.233.82)"


Just to check, I have a zone named groovychocolate.com with the various
records for that domain and another sepearate zone named
233.20.212.in-addr.arpa.groovychocolate.com which contains the following
records and that's all:

233.20.212.in-addr.arpa.groovychocolate.com ns ns.groovychocolate.com
82.233.20.212.in-addr.arpa.groovychocolate.com PTR
mail.groovychocolate.com
83.233.20.212.in-addr.arpa.groovychocolate.com PTR
db1.groovychocolate.com
84.233.20.212.in-addr.arpa.groovychocolate.com PTR
db2.groovychocolate.com

Is that right? Or do I need to add something else?

God, this is driving me nuts...



----- Original Message -----
From: "Men & Mice Support" <cbuxton@menandmice.com>
To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
Sent: Wednesday, January 19, 2005 7:22 PM
Subject: Re: Setting Up Reverse DNS Query


> Put dots on the ends of names that shouldn't end in the zone's name
> (233.20.212.in-addr.arpa.groovychocolate.com). For example, here's what
> happens with and without the dots:
>
> ns.groovychocolate.com. => ns.groovychocolate.com.
> ns.groovychocolate.com =>
> ns.groovychocolate.com.233.20.212.in-addr.arpa.groovychocolate.com.
>
> There are a couple of upgrades available to you:
>
> Free: QuickDNS Pro Server 2.2.4, which fixes some serious crashing and
> spoofing bugs, is available here:
> <ftp://ftp.menandmice.com/pub/quickdns/old/QuickDNSPro2.2.4.sit.hqx>
>
> Paid: QuickDNS 4.6.1 is available for Mac OS X, as well as other operating
> systems, but not for classic Mac OS.
> <http://www.menandmice.com/3000/3230_order_quickdns_mac.html>
>
> Chris Buxton
> Men & Mice - Making DNS Easy
>
> At 11:41 AM +0000 1/19/05, Stuart Douglas wrote:
>>Hi
>>
>>I changed the name of the primary domain 0.233.20.212.in-addr.arpa to
>>233.20.212.in-addr.arpa.groovychocolate.com as suggested but that meant
>>that the phrase '233.20.212.in-addr.arpa.groovychocolate.com ' was added
>>to every Parameter, both in the Domain information and Domain Window.
>>forinstance, in the Domain Informaiton window, the 'Primary' box was
>>changed from
>>
>>ns.groovychocolate.com
>>to
>>ns.groovychocolate.com.233.20.212.in-addr.arpa.groovychocolate.com
>>
>>and 'Hostmaster' was changed from
>>
>>hostmaster.groovychocolate.com
>>
>>to
>>
>>hostmaster.groovychocolate.com.233.20.212.in-addr.arpa.groovychocolate.com.
>>
>>In the main Domain window, that made the PTR entry for our mailserver
>>
>>82.233.20.212.in-addr.arpa.groovychocolate PTR
>>mail.groovychocolate.com.233.20.212.in-addr.arpa.groovychocolate.com.
>>
>>which presumably isn't right. When I click on the Parameter 1 part of
>>each record to delete the 233.20.212.in-addr.arpa.groovychocolate.com. bit
>>I can't - all it let's me highlight and edit is the first
>>mail.groovychocolate.com part.
>>
>>Sorry if I'm being dense, but this side of things is all new to me...
>>
>>Also, we have QuickDNS Pro 2.2.1 - is there an upgrade?
>>
>>Stuart
>>
>>----------------------------------------------------------------------
>>
>>Subject: Re: Setting Up Reverse DNS Query
>>From: "Stuart Douglas" <stuart@groovychocolate.com>
>>Date: Mon, 17 Jan 2005 16:00:07 -0000
>>
>>
>>At 3:28 PM +0000 11/9/04, Stuart Douglas wrote:
>>>From: "Men & Mice Support" <cbuxton@menandmice.com>
>>>Date: Mon, 8 Nov 2004 09:46:00 -0800
>>>
>>>>Setting up reverse DNS records isn't as straightforward as it sounds.
>>>>First, you must figure out if the reverse zone belongs to your server.
>>>
>>>>With a regular domain name, when you register the domain, it's
>>>>delegated to your server. A reverse zone must be similarly delegated,
>>>>but "registration" is typically handled with your ISP rather than
>>>>with a central registrar.
>>>
>>>>I looked up the PTR record delegation for ns.groovychocolate.com. The
>>>>ednet.co.uk servers do in fact delegate your reverse records to your
>>>>server. The zone name (called "domain name" in QuickDNS Pro 2.x) is:
>>>
>>>>233.20.212.in-addr.groovychocolate.com.
>>>
>>>>Creative, and perfectly legal. You don't even need to separate these
>>>>into a reverse zone if you don't want to - just create records like
>>>>this for each of your IP addresses:
>>>
>>>>82.233.20.212.in-addr.groovychocolate.com. PTR
>>>>mail.groovychocolate.com.
>>>
>>>Ah, I was doing fine until this point Chris - our mail server and
>>>Quick DNS are both on the 82 box, so I've already got a record :
>>>
>>>82.233.20.212.in-addr.groovychocolate.com. PTR ns.groovychocolate.com
>>>
>>>Is it allowable to have both records, ie:
>>>
>>>82.233.20.212.in-addr.groovychocolate.com. PTR mail.groovychocolate.com
>>>82.233.20.212.in-addr.groovychocolate.com. PTR ns.groovychocolate.com
>>
>>It's not against the rules, but it's a bad idea in this case. You
>>should have just the one pointing to mail.groovychocolate.com.
>>
>>I thought I;d done this right after your help, but today when one of our
>>users tried to mail someone at easy.com they got a bounce back from the
>>email admin there saying that we did not in fact have Reverse DNS setup
>>for
>>our mail server.
>>
>>The situation with our DNS server (which I took over responsibility for
>>when
>>our CTO left) is as follows:
>>
>>We have two Primary Domains set up,
>>
>>groovychocolate.com
>>0.233.20.212.in-addr.arpa
>>
>>Our mail server and DNS server both reside on a mac cube with IP
>>212.20.233.82. In the Primary Domain groovychocolate.com, we have
>>(amongst
>>others) these records
>>
>>groovychocolate.com NS ns.groovychocolate.com
>>groovychocolate.com MX 10 mail.groovychocolate.com
>>mail.groovychocolate.com A 212.20.233.82
>>ns.groovychocolate.com A 212.20.233.82
>>web.groovychocolate.com CNAME ns.groovychocolate.com
>>
>>and in the Primary Domain 0.233.20.212.in-addr.arpa we have the following
>>entries:
>>
>>82.0.233.20.212.in-addr.arpa PTR mail.groovychocolate.com
>>
>>I'm not entirely sure why there is a zero in the 0.233.20.212.in-addr.arpa
>>domain, but presumably that's required since it's always been there?
>>
>>Could someone suggest what we need to add (a CNAME to groovychocolate.com
>>perhaps?)
>>
>>Regards
>>
>>Stuart
>>
>>
>>D
>
>





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