Wildcard CNAME record?

Barry Margolin barmar at alum.mit.edu
Wed Jan 16 15:33:03 UTC 2013

In article <mailman.1072.1358349671.11945.bind-users at lists.isc.org>,
 Oliver Peter <lists at peter.de.com> wrote:

> On Wed, Jan 16, 2013 at 02:57:48PM +0000, Baird, Josh wrote:
> > Is it acceptable to have a wildcard CNAME?  Example:
> > 
> > *             IN           CNAME                somewhere.com.
> > 
> > Or, would it be advised to only use wildcard 'A' records?
> Not valid since there should be SOA and NS records for somewhere.com,
> the CNAME would conflict with them.

But wildcards only synthesize records that are actually queried for. If 
no one ever asks for these SOA and NS records, the conflicts will never 
occur. They're the DNS equivalent of trees falling in a forest.

Barry Margolin
Arlington, MA

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