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DNS on Tiger Server



Proper DNS configuration is a complicated art...
but from our experience, if you are 'renting' an IP block -- as in a colo situation --
you have authority to direct inbound DNS from your domain to any of your assigned
IP's in that block, and many domain registrars and internet providers offer a web
interface to 'manage' inbound DNS. This can also be done within DNS on Tiger Server.


However, It is my impression that PTR (reverse DNS) is setup by the authority of the
organization they are assigned to -- the ISP or provider.


When we had Time-Warner Business Class for our server, our PTR records were always
screwed up -- and we lost mail because spam-filters caught the inconsistency and
tagged much of our outbound mail as suspect because our mail server IP DNS
did not match... Now that we are with a different (better) colo provider -- our DNS
matches inbound and out (PTR) and we have NO problems.


Just my $ .02.

Michael

On Feb 28, 2007, at 12:05 PM, email@hidden wrote:

At 5:58 PM +0100 2/28/07, Ansgar -59cobalt- Wiechers wrote:
On 2007-02-28 Dan Shoop wrote:
 Moreover if you dont' own your IP addresses then you shouldn't be
 host DNS for public consumption either so there's no problem here.

Dan, please do a reality-check. Now. This is done all the time in the
real world, and it works quite well. I DO NOT need to be authoritative
for 217.10.9.0/26 (or even 217.10.9.49) to be authoritative for
planetcobalt.net.


If the authoritative DNS for a given address range provides correct PTR
records there is no (in words "no") valid reason to do it over again.
Period.

Then you have owership and control of your IP addresses which is a different matter altogether.

What you're problem with understanding hlow to spilt horizons in each
of these cases is and why you think you can't do this with with OS X
Server as it ships is beyond me.
--

-dhan

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