No authority records

Re: No authority records

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In the first case, you asked your server for a record that doesn't
exist, for a domain name that does exist (mountain.ch). In other
words, there is such a domain name, but it doesn't have a TXT record.
QuickDNS Server responded with 0 records in all three sections,
indicating that it knows authoritatively that there is no such
record. This is a correct and valid response. However, since it
contains no records, it is not cacheable.

In the second case, you asked your server for information it didn't
have. So it asked one of our servers, in this case our ISP's
(BIND-based) server, and then returned that response. Once again, you
asked for a domain name that exists, but a record type that does not
exist. The server gave back a cacheable negative response, which is
(I believe) actually invalid - this response (as I recall) indicates
that there are no records of any kind named "menandmice.com".

In situations where the query is for a domain name that doesn't
exist, an authoritative server may (optionally) return the SOA record
for the zone that would have contained this name in the authority
section of the response. This result is cacheable, and this is called
"negative caching". BIND 8 implements this behavior of returning
negative results.
____________________________________________________________________
Chris Buxton Men & Mice
support@menandmice.com Making DNS Easy

At 10:32 AM +0200 10/9/02, qdns wrote:
>Hello DNS-Fighters
>
>We have a problem with all zones on our qdns-server.
>If I make a query with nslookup and search perhaps for TXT records,
>which not exists, then there is no record.
>If I do the same query to "the rest of the zones of the word", there
>is a record.
>
>------------------------------------------------------------------------
>--------
>Here me test-setting
>------------------------------------------------------------------------
>--------
>[my-Computer:~] me% nslookup
>Default Server: ns1.mountain.ch
>Address: 195.141.95.66
>
>> set qt=TXT
>>set debug
>
>------------------------------------------------------------------------
>--------
>Here the example for a zone "mountain.ch." on our server
>------------------------------------------------------------------------
>--------
>> mountain.ch.
>Server: ns1.mountain.ch
>Address: 195.141.95.66
>
>Got answer:
> HEADER:
> opcode = QUERY, id = 9458, rcode = NOERROR
> header flags: response, auth. answer, want recursion,
>recursion avail.
> questions = 1, answers = 0, authority records = 0,
>additional = 0
>
> QUESTIONS:
> mountain.ch, type = TXT, class = IN
>
>------------
>*** No text (TXT) records available for mountain.ch.
>
>
>------------------------------------------------------------------------
>--------
>Here the example for the zone "menandmice.com."
>------------------------------------------------------------------------
>--------
>> menandmice.com.
>Server: ns1.mountain.ch
>Address: 195.141.95.66
>
>;; res_nmkquery(QUERY, menandmice.com, IN, TXT)
>------------
>Got answer:
> HEADER:
> opcode = QUERY, id = 9460, rcode = NOERROR
> header flags: response, recursion avail.
> questions = 1, answers = 0, authority records = 1,
>additional = 0
>
> QUESTIONS:
> menandmice.com, type = TXT, class = IN
> AUTHORITY RECORDS:
> -> menandmice.com
> ttl = 86400 (1D)
> origin = dns1.menandmice.com
> mail addr = hostmaster.menandmice.com
> serial = 2002100701
> refresh = 900 (15M)
> retry = 300 (5M)
> expire = 604800 (1W)
> minimum ttl = 86400 (1D)
>
>------------
>Authoritative answers can be found from:
>menandmice.com
> ttl = 86400 (1D)
> origin = dns1.menandmice.com
> mail addr = hostmaster.menandmice.com
> serial = 2002100701
> refresh = 900 (15M)
> retry = 300 (5M)
> expire = 604800 (1W)
> minimum ttl = 86400 (1D)
>
>------------------------------------------------------------------------
>---------
>Is the mistake on our quickdns server (Version 3.5.3 on mac os 9),
>or is it on our ISP (sunrise.ch) or ?...?...?
>
>Thank you for help.
>
>Gruss
> Oliver Brodwolf

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