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Re: Virtual DNS questiona and reverse lookup table conflicts



Bruno Wolff III wrote:
On Sun, Dec 07, 2008 at 12:19:11 +0200,
  Veli-Pekka Kestilä <fedora guagua fi> wrote:
As far as I know you can have only one reverse map for one ip-address. But for the e-mail server it should be enough for you to have one valid forvard reverse pair.

Reverse maps are just PTR records. You can have more than one PTR record
for a domain name. Whether requestors will use more than one of them is outside of your control.

But also keep in mind that if there are duplicate PTR addresses such as:

1     host1.domain1.com    <--  this is the first match accepted.
1     host1.domain2.com
1     host2.domain1.com
1     host2.domain2.com

The first addressed matched is the one accepted while the rest
of the same addresses are not handled, or so I think.  I noticed
this right away when I used dig or nslookup.

Kind regards,
Dan


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