Moving DNS out of non-cooperative provider
barmar at alum.mit.edu
Tue Jun 19 18:21:40 UTC 2012
In article <mailman.1085.1340102760.63724.bind-users at lists.isc.org>,
Tony Finch <dot at dotat.at> wrote:
> Mark Andrews <marka at isc.org> wrote:
> > In message <4FDF631A.4060405 at brandeis.edu>, John Miller writes:
> > >
> > > We've actually run into this before. Once upon a time, RCN cable used
> > > to run some slave servers for us, but we've long since moved away from
> > > them, including zone transfers. We yanked them from our registrar a
> > > long time ago, and life was good. For whatever reason, RCN's still
> > > answering queries for brandeis.edu.
> > And if there is another zone with a CNAME to a brandeis.edu domain
> > on those servers the clients will be getting old data. As you have
> > no control over creation of CNAMEs in other zones I would suggest
> > that you send them a Cease and Decist notice if they are still doing
> > it.
> Here's a tip for anyone running an open DNS hosting service: you can use
> "additional-from-auth no; additional-from-cache no;" to reduce problems of
> this kind.
Good ideas, but if you're a customer there's not much you can do about
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