[windows2000] Re: DNS

  • From: "Sullivan, Glenn" <GSullivan@xxxxxxxxxxxxxx>
  • To: <windows2000@xxxxxxxxxxxxx>
  • Date: Tue, 29 Jun 2004 11:42:07 -0400

Both... if a query is made to a DNS server who believes that it is
authoritative for that domain, it will answer the query (directly or
recursively) or return a "Not Found" message.
 

Glenn Sullivan, MCSE+I  MCDBA
David Clark Company Inc. 

 

________________________________

From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Beckett
Posted At: Tuesday, June 29, 2004 8:59 AM
Posted To: Windows 2000
Conversation: [windows2000] Re: DNS
Subject: [windows2000] Re: DNS


Would this apply to an MX record as well or just host records?


        -----Original Message-----
        From: Sullivan, Glenn [mailto:GSullivan@xxxxxxxxxxxxxx] 
        Sent: Monday, June 28, 2004 3:37 PM
        To: windows2000@xxxxxxxxxxxxx
        Subject: [windows2000] Re: DNS
        
        
        If the address is in a local zone, it never forwards.
         
        If the address is not in a local zone, it always forwards.
         
        So, if your DNS Server has a zone name "foo.com." then any
request for any host at foo.com will be resolved (or deferred, but to
down-level DNS servers only, for subdomains) locally, with no
forwarders.
         
        Any other domain will be forwarded.
         
        Which is why you have to delete the "." zone before the
forwarders will work... if not, then every zone is a sub-domain of one
of your "local" zones, and will be resolved with recursion, rather than
forwarding the request to another server.  ie, a request to
www.davidclark.com will be recursively deferred to the servers for
".com" which will refer to the servers for "davidclark.com" which will
return the record for www up the chain and back to the client...
         
        Capish?
         

        Glenn Sullivan, MCSE+I  MCDBA
        David Clark Company Inc. 

         

________________________________

        From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Beckett
        Posted At: Monday, June 28, 2004 3:27 PM
        Posted To: Windows 2000
        Conversation: [windows2000] DNS
        Subject: [windows2000] DNS
        
        

        Can someone definitively answer this question... 

        If using forwarders on your W2K DNS server, does the forward
lookup occur first or after the DNS server fails to resolve the name?
        

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