forward unknown query

[Barry Finkel]

arnold7979 at hotmail.com (Junior Arnold) wrote:

>Sorry if this question has been asked (and answered) before but i've
>been googling for sometime with no luck:
>
>Here comes my ques:
>
>I have foobar.com hosted somewhere else with www.foobar.com = 1.2.3.4
>and mail.foobar.com = 5.6.7.8.
>
>I have a LAN with 20 PC and i want to do local (internal) DNS where
>every PC has a name (pc1.foobar.com = 192.168.0.100, pc2.foobar.com =
>192.168.0.101). Hence, I created a master zone called foobar.com.
>
>Now, how do i forward unknown queries such as www.foobar.com or
>mail.foobar.com to my hosting service provider's DNS (or perhaps any
>internet'able DNS such as my ISP's one)?

If you have a DNS server that is the master for

     foobar.com

Then one of three things must be true:

     1) You have an "A" record in your zone for

             www.foobar.com

     2) You have a subdomain

            www.foobar.com

        of your primary domain

             foobar.com

        and that subdomain is either a zone mastered on your server or
        mastered on someone else's server.

     3) There is no such machine 

             www.foobar.com

         and thus there is no record in DNS for that name.

Summary - for the zone foobar.com, ALL of the records must be in your
master zone or be in a delegated sub-domain zone.  If neither the master
zone or the delegated sub-domain zone contain any records for

     www.foobar.com

then that nodename does not exist in DNS.  You are authoritative for
the information in foobar.com, and if the info is not in your DNS,
nothing is going to make it look in some other zone on some other 
server.
----------------------------------------------------------------------
Barry S. Finkel
Computing and Instrumentation Solutions Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-4601
Building 222, Room D209              Internet: BSFinkel at anl.gov
Argonne, IL   60439-4828             IBMMAIL:  I1004994