Dig gives ;; connection timed out; no servers could be reached

[Balanagaraju Munukutla]

Hi All

To explain more on the below. We are trying to do a query on MX record for 
abcd.com.sg. domain to the Authoritative nameserver xxxx.com from my pc. 
You can see the reply as below. Done this mean that the  Authoritative 
nameserver xxxx.com failure or this PC where I am doing the query is 
blocking to communicate that local DNS server configured on it.

Please help.

Thanks & Regards
Nagaraj






Kevin Oberman <rkoberman at gmail.com> 
Sent by: kob6558 at gmail.com
10/03/2013 12:47 PM

To
Balanagaraju Munukutla/Singapore/AT&T/IDE at IBMSG
cc
bind-users <bind-users at isc.org>, Subramaniam Raju <subrraju at in.ibm.com>
Subject
Re: Dig gives ;; connection timed out; no servers could be reached






On Wed, Oct 2, 2013 at 9:18 PM, Balanagaraju Munukutla <9balan at sg.ibm.com> 
wrote:

Hi 

Any one could help on the error below. 


[andrew at oc8163211842 ~] $ dig @xxxx.com abcd.com.sg mx 
 
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> @xxxxx.com abcd.com.sg mx
; (1 server found)
;; global options:  printcmd
;; connection timed out; no servers could be reached 

[andrew at oc8163211842 ~]$ dig @xxxx.com abcd.com.sg mx 
 
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> @xxxxx.com abcd.com.sg mx
; (1 server found)
;; global options:  printcmd
;; connection timed out; no servers could be reached 
--------------------------- 
 
Thanks & Regards 
Nagaraj

This message is virtually content free. You basically said "Something in 
DNS failed at a very basic level, but I will remove any information that 
might provide even a slight clue to determine why." You hide the query and 
the server. All that can really be said is that your client failed to get 
a response from the specified server. 

Is the specified system even running DNS? Is a firewall blocking the 
query? The response? Is the server yours or someone else's? Is routing 
allowing bi-directional communication? Is these an outage that is blocking 
communication? The list of possibilities just goes on and on.

If you want help, you have to tell us something more than that it failed.
-- 
R. Kevin Oberman, Network Engineer
E-mail: rkoberman at gmail.com
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