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 sedwa...@sedwards.com Voice: +1-760-468-3867 PST Newline Fax: +1-760-731-3000 -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users