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Re: Virtual DNS questiona and reverse lookup table conflicts



Christopher K. Johnson wrote:
Bruno Wolff III wrote:
On Sat, Dec 06, 2008 at 13:34:06 -0800,
  "Daniel B. Thurman" <dant cdkkt com> wrote:
Is it possible to have a single DNS server support
two different domain names, with each domain
name having it's own forward and reverse lookups?

It is possible for PTR lookups to return different results based on the
IP address that the request comes from. I don't use bind and so can't
give you advice on how to set this up (assuming that it will solve your
problem), but googling for "split horizon" and "bind" should find help
in doing that.
Check out "bind views".

Thanks for the tips.

But the more I think about it, how does bind know which
reverse ip domain name to return?  Domain1 or Domain2?

I am missing the logic behind this.

It matter which domain name is returned because nowadays, there
are email sites that do a reverse ip lookup to ensure that the domain
name matches with the ip address and if they don't match - the email
message is rejected, for example.

Thanks for responding!
Dan


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