MX Record on a wildcard zone

David Botham dns at botham.net
Fri Jul 12 19:23:02 UTC 2002


I see how this could simplify things greatly...

Dave...

> -----Original Message-----
> From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org] On
> Behalf Of Pete Ehlke
> Sent: Friday, July 12, 2002 3:18 PM
> To: David Botham
> Cc: 'Bind Users'
> Subject: Re: MX Record on a wildcard zone
> 
> 
> On Fri, Jul 12, 2002 at 02:49:01PM -0400, David Botham wrote:
> >
> > I am not even going to ask why you would want to do this, but... see
> > below
> >
> There are plenty of perfectly valid reasons for wanting to publish a
> wildcard MX for com.
> 
> Testing labs, for example, where you're evaluating mail server
software.
> The most common legitimate reason is in networks that communicate with
> the outside world only through application proxies. You set up false
> root servers that publish wildcard MX records for . pointing to a
small
> set of smtp servers that are allowed to communicate with the outside
> world, and then simply deny outbound smtp from everyone else on the
> network.
> You can avoid an incredible pile of mail server configuration hassles
on
> large networks like this.
> 
> For a very interesting discussion of such an architecture, see Vixie
and
> Scharf's paper "SENDS: a Tool for Managing Domain Naming and
Electronic
> Mail in a Large Organization" from the proceedings of LISA '94.
> 
> -P.



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