A record of domain name must be name server ?
Sam.Wilson at ed.ac.uk
Thu Sep 11 14:24:33 UTC 2014
In article <mailman.902.1410422525.26362.bind-users at lists.isc.org>,
Antonio Querubin <tony at lavanauts.org> wrote:
> On Thu, 11 Sep 2014, Matus UHLAR - fantomas wrote:
> > If you point www CNAME @, the 'www' will have both MX and NS records same as
> > example.com. Which may e.g. cause rejectd on backup MX hosts, apparently
> > not designed to receive mail for www.example.com.
> Actually no. All other RRs are supposed to be ignored (except for RRSIG,
> etc) once the CNAME exists. Ie. the MX and NS RRs exist only for
> example.com, but not www.example.com.
I think that's a misunderstanding of what Matus wrote. With separate A
records then www.example.com will only have an A record. If you alias
www to @ then looking up MX and NS records for www will return the ones
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