On 03/19/12 13:28, babu dheen wrote:
Dear Support,
I am trying to resolve www.dubaiairport.com
<http://www.dubaiairport.com> from my GW BIND server as below. But not
getting any output
$ dig A www.dubaiairport.com <http://www.dubaiairport.com>
; <<>> DiG 9.3.4-P1 <<>> A www.dubaiairport.com
<http://www.dubaiairport.com>
;; global options: printcmd
;; connection timed out; no servers could be reached
Whereas, when i try through dubaiairport.com NS, i am getting the
response as below. What could be the problem. Any idea?
$ dig @213.42.52.79 A www.dubaiairport.com <http://www.dubaiairport.com>
; <<>> DiG 9.3.4-P1 <<>> @213.42.52.79 A www.dubaiairport.com
<http://www.dubaiairport.com>
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48514
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.dubaiairport.com. IN A
;; ANSWER SECTION:
www.dubaiairport.com <http://www.dubaiairport.com>. 7200 IN A 213.42.55.169
;; Query time: 127 msec
;; SERVER: 213.42.52.79#53(213.42.52.79)
;; WHEN: Mon Mar 19 23:25:35 2012
;; MSG SIZE rcvd: 54
When you see this sort of situation, a good guess is that there is an
authority mismatch and some/all of the authoritative NS records listed
in the child zone are not responding. In this case, there is an
authority mismatch:
dig +trace ns dubaiairport.com
[skip root response]
dubaiairport.com. 172800 IN NS dcaowa01.dubaiairport.com.
dubaiairport.com. 172800 IN NS svr-b003.dubaiairport.com.
[RRSIG deleted]
;; Received 608 bytes from 192.12.94.30#53(192.12.94.30) in 724 ms
dubaiairport.com. 7200 IN NS secdns.dubaiairport.com.
dubaiairport.com. 7200 IN NS auhans2.ecompany.ae.
dubaiairport.com. 7200 IN NS dxbans2.ecompany.ae.
dubaiairport.com. 7200 IN NS dxbans1.ecompany.ae.
dubaiairport.com. 7200 IN NS dcaowa01.dubaiairport.com.
dubaiairport.com. 7200 IN NS auhans1.ecompany.ae.
dubaiairport.com. 7200 IN NS svr-b003.dubaiairport.com.
;; Received 323 bytes from 213.42.52.79#53(213.42.52.79) in 279 ms
One of the above DNS servers, secdns.dubaiairport.com, isn't responding
for me. Sometimes that's enough to cause intermittent timeouts for dig.
dig +nssearch dubaiairport.com
SOA dcaowa01.dca.com. administrator.dubaiairport.com. 2005061961 900 600
86400 7200 from server 213.42.52.79 in 278 ms.
SOA dcaowa01.dca.com. administrator.dubaiairport.com. 2005061961 900 600
86400 7200 from server 195.229.237.52 in 278 ms.
SOA dcaowa01.dca.com. administrator.dubaiairport.com. 2005061961 900 600
86400 7200 from server 194.170.1.99 in 282 ms.
SOA dcaowa01.dca.com. administrator.dubaiairport.com. 2005061961 900 600
86400 7200 from server 213.42.52.75 in 288 ms.
SOA dcaowa01.dca.com. administrator.dubaiairport.com. 2005061961 900 600
86400 7200 from server 194.170.1.6 in 289 ms.
SOA dcaowa01.dca.com. administrator.dubaiairport.com. 2005061961 900 600
86400 7200 from server 194.170.1.7 in 293 ms.
;; connection timed out; no servers could be reached [referring to
secdns.dubaiairport.com]
michael
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