incomplete zone date cached - can't update it

Kevin Darcy kcd at daimlerchrysler.com
Thu Dec 7 01:40:16 UTC 2000


"dig cyberware.com" asks only for A records. It doesn't request
MX records. Therefore you shouldn't be surprised that MX records are
missing from the response.

"dig @cyberware.com cyberware.com mx", in contrast, asks *explicitly* for
MX records.

Try "dig cyberware.com mx" from your local server.

By the way, nsupdate wasn't intended as a tool to manipulate cache
contents. It's for making Dynamic Updates to the master server of a zone.


- Kevin

fil krohnengold wrote:

> Two name servers: one (A) on a protected network is running 8.1.2 - the
> other (B), exposed to the outside world, running 8.2.2-P7.
>
> Server A seems to know about the mx record for cyberware.com. Server B
> seems not to - and seems unable to find it.
>
> I tried and failed to address this using nsupdate - I suspect server B
> refused because it's not authoritative for the zone in question.
> Okay - now what?  Killing and restarted named didn't seem to change
> it's cache contents.
>
> Yes - I know I should upgrade server A - but you can't get there from
> where you're reading.  And until I figure out what's going on here,
> I'm not in a rush to break that one too.
>
> Server-B:~> dig cyberware.com
>
> ; <<>> DiG 8.2 <<>> cyberware.com
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
> ;; QUERY SECTION:
> ;;      cyberware.com, type = A, class = IN
>
> ;; ANSWER SECTION:
> cyberware.com.          18h45m54s IN A  165.227.82.1
>
> ;; AUTHORITY SECTION:
> cyberware.com.          18h45m54s IN NS  165.227.82.1.
>
> ;; Total query time: 6 msec
> ;; FROM: armand to SERVER: default -- 209.2.162.213
> ;; WHEN: Wed Dec  6 19:14:30 2000
> ;; MSG SIZE  sent: 31  rcvd: 73
>
> armand:~> dig @cyberware.com cyberware.com mx
>
> ; <<>> DiG 8.2 <<>> @cyberware.com cyberware.com mx
> ; (1 server found)
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
> ;; QUERY SECTION:
> ;;      cyberware.com, type = MX, class = IN
>
> ;; ANSWER SECTION:
> cyberware.com.          1D IN MX        10 cyberware.com.
>
> ;; AUTHORITY SECTION:
> cyberware.com.          1D IN NS        165.227.82.1.
>
> ;; ADDITIONAL SECTION:
> cyberware.com.          1D IN A         165.227.82.1
>
> ;; Total query time: 100 msec
> ;; FROM: armand to SERVER: cyberware.com  165.227.82.1
> ;; WHEN: Wed Dec  6 19:14:49 2000
> ;; MSG SIZE  sent: 31  rcvd: 89
>
> Server-B:~>
>
> thanks
>
> -fil






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