I am running dns server on windows 2003 server in the internal network. All
the workstations are using this server for name resolution. The dns server
is all configured with forwarder which point to an internet authoritative
server for external or internet name resolution.

The problem I am experiencing is that I am dealing with a number of sites
whose reverse resolution names are not equal to that of specified for forward
resolution.

Is there a standard method to resolve this problem? If not, is there a
place to tell the dns server to remember the names when performing forward
resolution and use them first when doing reverse resolution?

Thanks in advance

In newsD3DD00E-A3F5-4E27-AD49-160B80890CFB@microsoft.com,
RG <RG@discussions.microsoft.com> stated, which I commented on below:
> I am running dns server on windows 2003 server in the internal
> network. All the workstations are using this server for name
> resolution. The dns server is all configured with forwarder which
> point to an internet authoritative server for external or internet
> name resolution.
>
> The problem I am experiencing is that I am dealing with a number of
> sites whose reverse resolution names are not equal to that of
> specified for forward resolution.
>
> Is there a standard method to resolve this problem? If not, is there
> a place to tell the dns server to remember the names when performing
> forward resolution and use them first when doing reverse resolution?
>
> Thanks in advance

Are you doing this for mail reverse PTR entries for public domains? Some do
not have them and there is no way around that. If it is a spam filter,
you'll just have to make adjustments or compromises to receive mail, but
they may still be filtered based on RBLS or SURBLS.

As for caching reverse entries, no. Only in forward entries, such as with a
host file, but I wouldn't do it that way. Some mail filters will allow to
increase the cache length ignoring the original time stamp on the record.
Mail filters will also allow you to create an IP trust list, as well as
domain trust lists. For reverse, it;s dynamic, unless you write an app to do
it.

I hope I understood your question. If not, please let me know.

--
Ace
Innovative IT Concepts, Inc (IITCI)
Willow Grove, PA

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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