How to Resolve external names without timeout on reverse lookups

[Barry Margolin]

In article <9vpt63$jpn at pub3.rc.vix.com>,
Sommariva Graziano  <Graziano.Sommariva at elsag.it> wrote:
>For historical and histerical reasons we have many IP classes in the
>internal network that are in the External ip range.
>
>If I instruct internal ROOT DNS servers to forward to external DNS server to
>resolve the "REST of the world" I risk to get many timeouts whenever an
>INTENAL" host belonging to public "IP-Range" telnets to a host requesting
>the reverse ip address.
>
>I though to declare  my internal root-DNS servers as primary all possiblie
>in-arpa zones present on my network.

That's probably the best solution.  Any address ranges you're using
internally should have reverse DNS zones on your internal DNS servers.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.