resolution problem
Matus UHLAR - fantomas
uhlar at fantomas.sk
Thu May 19 13:53:20 UTC 2016
On 18.05.16 14:10, Con Wieland wrote:
>I am having an issue resolving www.cloudsat.cira.colostate.edu from 2 of my
> name servers. I have 2 others with identical configs that resolve
> correctly. A normal lookup shows a server fail but a +trace looks ok.
> Any ideas how to better troubleshoot the issue?
tried web dns checkers? Some of them use to provide useful results.
>dig www.cloudsat.cira.colostate.edu @ns1.service.uci.edu
[...]
>;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 1057
>colostate.edu. 172800 IN NS dns1.colostate.edu.
>colostate.edu. 172800 IN NS dns3.colostate.edu.
>;; Received 119 bytes from 192.41.162.30#53(l.edu-servers.net) in 78 ms
>
>www.cloudsat.cira.colostate.edu. 3600 IN CNAME dpc.cira.colostate.edu.
>dpc.cira.colostate.edu. 3600 IN A 129.82.109.62
>;; Received 83 bytes from 129.82.103.121#53(dns1.colostate.edu) in 36 ms
often a problem of invalid NS delegation, or bad TTL (A record for a server
expires before NS record).
--
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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