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Re: Catchall for Bind?

On Mon, Apr 15, 2002 at 04:44:52PM +1000, Jason Lim wrote:
> Hi,
> Hum... no one replied to this. Does this mean it isn't possible without
> huge modifications, or no one got around to replying yet? ;-)

[ See bottom ]

> ----- Original Message -----
> From: "Jason Lim" <maillist@jasonlim.com>
> To: <debian-isp@lists.debian.org>
> Sent: Sunday, April 14, 2002 9:45 AM
> Subject: Catchall for Bind?
> > Hi all,
> >
> > Is there any way to setup a "catch-all" BIND IP address? That is... if a
> > domain name has our DNS servers listed, then we automatically resolve it
> > to a predefined IP number (act authoritive). Sort of how you can have a
> > "default" virtual host in Apache.
> >
> > Naturally, this cannot interfere with the existing domains... just act
> > like a "fallback" if nothing is there.
> >
> > I was thinking this so that people could simply point their domains to
> our
> > DNS servers, and have, perhaps, a domain parking website show up
> > automatically without us having to add all of it.
> >
> > Possible? (perhaps it is already being done?!)
> >
> > TIA.

Given that this seriously violates both the letter and spirit of the DNS
protocol, I sincerely hope not. However, there *are* reasonable solutions
to the problem you appear to be trying to solve, at least for some values
of resaonable. One that seems likely, off the top of my head, is to use
some form of provisioning tool (often an in-house script, natch) to drop
in a domain with a default set of records pointing at your mail & web server
setup by default (along with, presumably, configs for those servers).

The brave might try dynamic updates or single-domain loads in BIND 9; this
way lies fraught with... interesting times, or did a few months ago at most
(to the point that we stopped using the latter, though the former is a very
nice feature to have, and is much used today - having to wait for periodic
crontab reloads only for adding/removing domains, rather than any sort of
record update, is a wonderful goodness).
Joel Baker                           System Administrator - lightbearer.com
lucifer@lightbearer.com              http://users.lightbearer.com/lucifer/

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