On Tue, 15 Jun 2010, Faisal Hanif wrote:
> Till now I am not able to find any difference between both machines. Can
> you please tell me how I can try to resolve it on OS level using some
> utility like dig?
I'm not a DNS guru, but this is what I would do...
) Start with "whois" to determine the names of the authoritative name
servers for the domain:
whois example.com
This shows that A.IANA-SERVERS.NET and B.IANA-SERVERS.NET are the
authoritative name servers.
) Query each of the name servers to see who they think are the name
servers:
dig @A.IANA-SERVERS.NET example.com ns
dig @B.IANA-SERVERS.NET example.com ns
This shows that a.iana-servers.net and b.iana-servers.net. The difference
in case is not significant.
) Query each name server to see if they can resolve the host name:
dig @a.iana-servers.net whsvoip.example.com
dig @b.iana-servers.net whsvoip.example.com
) If you are trying to use SRV records, use these queries:
dig @a.iana-servers.net srv _sip._udp.example.com
dig @b.iana-servers.net srv _sip._udp.example.com
) And just for fun, repeat the whole exercise on the other host. You're
looking for failures or inconsistencies that may explain why you getting
different behaviors.
--
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards [email protected] Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
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