[ntp:questions] DNS server b.ntpns.org for pool.ntp.org domain is down

Danny Mayer mayer at ntp.isc.org
Tue Aug 21 02:19:47 UTC 2007


Michael Wang wrote:
> I have been having trouble resolve pool.ntp.org servers.
> It has been going on for about two weeks.
> 
> I traced down the problem to that one of the DNS servers
> for pool.ntp.org domain "b.ntpns.org." is down.
> 
> pool.ntp.org.           604800  IN      NS      b.ntpns.org.
> pool.ntp.org.           604800  IN      NS      c.ntpns.org.
> pool.ntp.org.           604800  IN      NS      d.ntpns.org.
> pool.ntp.org.           604800  IN      NS      e.ntpns.org.
> pool.ntp.org.           604800  IN      NS      a.ntpns.org.
> 
> The problemil is illustrated below:
> 
> # nslookup                       
> 
>> server b.ntpns.org
> Default server: b.ntpns.org
> Address: 67.19.103.171#53
> 
>> 0.pool.ntp.org
> Server:         b.ntpns.org
> Address:        67.19.103.171#53
> 
> ** server can't find 0.pool.ntp.org: NXDOMAIN
> 
>> server a.ntpns.org
> 
> Default server: a.ntpns.org
> Address: 216.52.237.236#53
> 
>> 0.pool.ntp.org
> Server:         a.ntpns.org
> Address:        216.52.237.236#53
...

You really need to ask on the pool mailing list. From the look of it b
is not receiving zone transfers from the master. Details of the failure
would be in b's syslog. Also please use dig instead of nslookup.
nslookup is a lousy diagnostic tool.

Danny




More information about the questions mailing list