Define a domains addresses sole in terms of another

[Stephane Bortzmeyer]

On Mon, Jul 09, 2007 at 09:49:48PM +0100,
 John Steel <john.steel at phonewebcam.com> wrote 
 a message of 71 lines which said:

> Do you mean like this?

Not exactly.

> Why are there 3 NS recs now?

You did not translate the first file you posted. The first file said
(with absolute domain names):

example1.com.             IN NS      ns.example1.com.
example1.com.             IN NS      ns0.example1.com.
example1.com.             IN NS      ns0.example1.net.

Translated in relative, it should have been:

@             IN NS      ns
              IN NS      ns0
              IN NS      ns0.example1.net.

> www                              IN CNAME   @

Bad idea, because www would inherit all the records of example.com.

> webmail                          IN CNAME   www

Forbidden, you cannot have a CNAME going to a CNAME.