Thanks David:

I'm not worried about resolution of further subdomains below
www.foo.bar.com. My problem is that I am worried about other A records (or
records of other types) in the foo.bar.com domain. For example, I want to
override a single A record www.foo.bar.com but I still want the A record
for say, www2.foo.bar.com to resolve through normal channels from the true
authoritive DNS server.

Bill

"David Nolan" wrote in message
news:e98cpg$1f5k$1@sf1.isc.org...
>
>
> --On Friday, July 14, 2006 09:58:21 -0400 Bill Sandiford
> wrote:
>
>
>> I need to know how to place a record for www.foo.bar.com into my DNS
>> servers without breaking the lookups for all other records in that
>> domain and any subdomains.
>>
>
> Configure your server such that www.foo.bar.com is a domain, with a single
> A record
> for the domain name. If you need baz.www.foo.bar.com to point back to the
> original servers you've got a harder problem. You could put NS records in
> for known subdomains, but that doesn't guarantee everything will work. It
> might be possible to solve that with a wildcard NS record, if thats even
> legal....
>
> It should be obvious that this is a hack, but its about the best you can
> do
> without a transparent proxy of some form, which wouldn't be solving it via
> DNS.
>
> -David Nolan
> Network Software Designer
> Computing Services
> Carnegie Mellon University
>
>

Bill Sandiford a écrit :
>
> I'm not worried about resolution of further subdomains below
> www.foo.bar.com. My problem is that I am worried about other A records (or
> records of other types) in the foo.bar.com domain. For example, I want to
> override a single A record www.foo.bar.com but I still want the A record
> for say, www2.foo.bar.com to resolve through normal channels from the true
> authoritive DNS server.

As David said, make your DNS server authoritative for the zone
www.foo.bar.com (not foo.bar.com) and put your A record www.foo.bar.com
in it. Be aware that it will mask any other www.foo.bar.com record, not
only the A record.

I'm not sure why you're worried about this. Things you do in the
example.com zone don't mess up the .com zone, do they? This is just the
same thing except a couple of levels farther down in the namespace
hierarchy.


- Kevin

Bill Sandiford wrote:
> Thanks David:
>
> I'm not worried about resolution of further subdomains below
> www.foo.bar.com. My problem is that I am worried about other A records (or
> records of other types) in the foo.bar.com domain. For example, I want to
> override a single A record www.foo.bar.com but I still want the A record
> for say, www2.foo.bar.com to resolve through normal channels from the true
> authoritive DNS server.
>
> Bill
>
> "David Nolan" wrote in message
> news:e98cpg$1f5k$1@sf1.isc.org...
>
>> --On Friday, July 14, 2006 09:58:21 -0400 Bill Sandiford
>> wrote:
>>
>>
>>
>>> I need to know how to place a record for www.foo.bar.com into my DNS
>>> servers without breaking the lookups for all other records in that
>>> domain and any subdomains.
>>>
>>>
>> Configure your server such that www.foo.bar.com is a domain, with a single
>> A record
>> for the domain name. If you need baz.www.foo.bar.com to point back to the
>> original servers you've got a harder problem. You could put NS records in
>> for known subdomains, but that doesn't guarantee everything will work. It
>> might be possible to solve that with a wildcard NS record, if thats even
>> legal....
>>
>> It should be obvious that this is a hack, but its about the best you can
>> do
>> without a transparent proxy of some form, which wouldn't be solving it via
>> DNS.
>>
>> -David Nolan
>> Network Software Designer
>> Computing Services
>> Carnegie Mellon University
>>
>>
>>
>
>
>
>
>
>

Yes, this worked.

Thanks to all that helped.

"Pascal Hambourg" wrote in message
news:e98kip$2br2$1@sf1.isc.org...
> Bill Sandiford a écrit :
>>
>> I'm not worried about resolution of further subdomains below
>> www.foo.bar.com. My problem is that I am worried about other A records
>> (or
>> records of other types) in the foo.bar.com domain. For example, I want
>> to
>> override a single A record www.foo.bar.com but I still want the A record
>> for say, www2.foo.bar.com to resolve through normal channels from the
>> true
>> authoritive DNS server.
>
> As David said, make your DNS server authoritative for the zone
> www.foo.bar.com (not foo.bar.com) and put your A record www.foo.bar.com
> in it. Be aware that it will mask any other www.foo.bar.com record, not
> only the A record.
>
>