Reverse DNS issues

[Barry Margolin]

In article <bo65ar$20bd$1 at sf1.isc.org>,
Don Jones <donjjones at hotmail.com> wrote:
>We have a class of IP addresses from our ISP which we currently run
>DNS for and also would like to run reverse DNS.  In speaking with our
>ISP, they have configured our subnet so we can run reverse DNS on our
>own servers.  We have DNS configured with reverse zones configured as
>well on our servers.  The problem we are having is that the only way
>we can run a successful reverse lookup on our hosts when the ISPs DNS
>servers have our information cached.  What I mean exactly if I were to
>run a reverse lookup from an outside server, it always fails.  If I
>then run a reverse lookup directly using our ISP's DNS server, it
>works and then subsequently works for all outside DNS servers for a
>couple of days.  Any idea what I can be missing here?  We are running
>Windows 2000 DNS and our ISP is running Windows 2000 DNS as well.

How do you expect us to figure out what's wrong if you don't tell us the
reverse zones involved?

-- 
Barry Margolin, barry.margolin at level3.com
Level(3), Woburn, MA
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