On 22.11.11 12:58, Binu B Nair wrote:
I am facing a very strange problem.
On sending a DNS query for [email protected] I do not get a DNS response from the resolver. It shows a SERVEFAIL error.
maybe because it's not valid domain name, because of the "@" character.
However on flushing the cache, this error subsides and the DNS look up is working fine. As per the initial analysis this is my finding:
I don't even see "direct.telstra.net" from here. Are you a telstra.net customer? maybe it has broken NS records, and they are only visible from their network...
1. DNS lookup for the hostname was getting responded from the cache 2. On restarting named the cache got cleared
In case 1 can anyone please advise why the resolver was caching a "serverfail" response?
Maybe it's not caching thge response, but unable to find the name.
Is it a bind characteristics to store all responses - positive and negative?
yes. -- Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. 2B|!2B, that's a question! _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list [email protected] https://lists.isc.org/mailman/listinfo/bind-users
