DNS concept about recursive query

[Jay zh]

Dear:

   For example, xyz-domain.com has two dns servers which are 
www.xyz-domain.com
and dns.xyz-domain.com. In the root server, these two servers also have glue 
records.

    www.xyz-domain.com. IN A 1.1.1.1
    dns.xyz-domain.com. IN A 2.2.2.2

   Now both 1.1.1.1 and 2.2.2.2 are not available. If someone use my dns 
server
to do recursive query and want to get the A record of www.xyz-domain.com 
recursively
and this result is not in the cache, can it get the A record? Someone said 
that it can
get the answer, because root server has the A record and the resolver got 
this then
stopped. I found some dns server's behavior is like this, but I test it in 
my dns ( bind 8
and 9) and  I can't get this behavior. Which option should I set?

   I know that resolver should stop query after asking authoritative dns 
server if this answer is
not in the local cache, so in this case the dns server will response 
timeout, is it true?

  Thanks a lot.

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/