A record of domain name must be name server ?

Antonio Querubin tony at lavanauts.org
Thu Sep 11 08:01:54 UTC 2014

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.

Antonio Querubin
e-mail:  tony at lavanauts.org
xmpp:  antonioquerubin at gmail.com

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