Bind 9 Reverse Lookup

[Barry Margolin]

In article <93kkkb$f0k at pub3.rc.vix.com>,
Ruben I Safir - Brooklyn Linux Solutions CEO  <ruben at mrbrklyn.com> wrote:
>
>
>
> - This is the output from nslookup -d
>
>I don't see anything to cuase the server not to be seen

I do.  The server responded to reverse lookup with an NXDOMAIN answer,
meaning that it can't find a PTR record for its own address.  Don't you see
that right after the first "Got answer:" line?

I did an AXFR of the zone, and I saw the following record:

114.229.112.216.in-addr.arpa  IN PTR  mail.rm-cpa.com.

Notice the missing "." after "arpa".  Since the name doesn't end in ".",
it's not fully qualified, so the $ORIGIN is appended.  Thus, the above
record is equivalent to:

114.229.112.216.in-addr.arpa.229.112.216.in-addr.arpa. IN PTR  mail.rm-cpa.com.

>On Thu, 11 Jan 2001 10:38:41 Ruben I Safir wrote:
>nslookup mail.rm-cpa.com
>
>
>;; res_nmkquery(QUERY, 114.229.112.216.in-addr.arpa, IN, PTR)
>------------
>Got answer:
>    HEADER:
>	opcode = QUERY, id = 16909, rcode = NXDOMAIN
>	header flags:  response, auth. answer, want recursion, recursion
>avail., authentic data
>	questions = 1,  answers = 0,  authority records = 1,  additional = 0
>
>    QUESTIONS:
>	114.229.112.216.in-addr.arpa, type = PTR, class = IN
>    AUTHORITY RECORDS:
>    ->  229.112.216.in-addr.arpa
>	ttl = 86400 (1D)
>	origin = mail.rm-cpa.com
>	mail addr = root.rm-cpa.com
>	serial = 5
>	refresh = 43200 (12H)
>	retry   = 3600 (1H)
>	expire  = 2419200 (4W)
>	minimum ttl = 86400 (1D)

-- 
Barry Margolin, barmar at genuity.net
Genuity, Burlington, MA
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