Customer request

Simon Hobson shobson0309 at
Tue Jan 13 08:29:55 UTC 2004

Jeff Stevens wrote:

>I have a customer request that goes like this:
>Customer wants to query particular outside DNS for a particular domain.
>    He does NOT want to go to this DNS for ANY queries outside that
>domain. (he is using pop mail on a mail server and wants to be dynamic
>addresses for this server as they go up/down all the time)
>He cannot use as forwarder as he doesnt want users to be able to query
>for other internet address.   He only wishes to dynamically query ONE
>domain (actually ONE NAME - probably the mail server).
>I have a hard time seeing how he can pick up an external DNS NS unless
>he manually configures a static IP for the domain NS.  It does appear he
>wants to query it (and be the only one able to do so) for a single
>address.  It seems a little ridiculous to lock down the users this way,
>but I've no ideas other than a manual process.  If anyone has a tip,
>they'll have my thanks...!

You mean that for this one domain only, you query a specific 
nameserver. That's fairly easy :

zone "" { type forwarder ; masters ( x.x.x.x ; ) ; } ;

that will tell your local nameserver to forward all queries for that 
zone to that particular server.

However, since this specific customer is wanting this (and you don't 
want to be setting this for all your other customers), I would 
suggest that you tell them to run their own nameserver locally, and 
then they can do what they want with their DNS resolution (like 
setting the 'mangling' described above).



NOTE: This is a throw-away email address which will reach me for as 
long as it stays spam-free, remove date for real address.

Simon Hobson, Technology Specialist
Colony Gift Corporation Limited
Lindal in Furness, Ulverston, Cumbria, LA12 0LD
Tel 01229 461100, Fax 01229 461101

Registered in England No. 1499611
Regd. Office : 100 New Bridge Street, London, EC4V 6JA.

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