Clarification on wildcard falls into glue records
alex at net-me.net
Tue May 15 14:08:39 UTC 2012
You should NOT get A records. Wildcard works only for hostnames
that have NO records of ANY type.
To quote RFC 1912, "A common mistake is thinking that a wildcard
MX for a zone will apply to all hosts in the zone. A wildcard MX will
apply only to names in the zone which aren't listed in the DNS at all.
" That is, if there is a wild card MX for *.example.com, and an
A record (but no MX record) for www.example.com, the correct
response (as per RFC 1034) to an MX request for www.example.com
is "no error, but no data"; this is in contrast to the possibly expected
response of the MX record attached to *.example.com.
On Tue, May 15, 2012 at 9:34 AM, rams <bramesh80 at gmail.com> wrote:
> I have NS record points a record [A/AAAA] which is falls into wildcard . But
> when I query for NS record against bind, we are not getting these records as
> glue records.
> *.a.example.com A 184.108.40.206
> example.com. NS abc.a.example.com.
> Querying example.com with any or ns.
> don't we get glue records for this scenario? please confirm.
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