[dns-operations] 2600::a1 (ns1-auth.sprintlink.net)

Jim Popovitch jimpop at gmail.com
Thu Feb 16 19:05:06 UTC 2017

On Thu, Feb 16, 2017 at 1:56 PM, David C Lawrence <tale at akamai.com> wrote:
> Jim Popovitch writes:
>> ~$ dig MX ups.com @ns1-auth.sprintlink.net
>> ...
>> ;; WARNING: recursion requested but not available
>> ....
>> I'm not always in the loop on things like this, how common is that?
> Extremely.  By default dig asks for recursive resolution, and it has
> no sense whether the target @server is a resolver or authoritative
> server.  Most authoritative servers are properly not configured to
> allow recursion, so when the answer comes back without the recursion
> available flag set dig just makes a note of that.
> You can use dig +norec to turn off the recursion desired flag in the
> query, and that will make the warning go away.

The issue is less about the norec, and more about the sprintlink NS
servers (listed as the auth NS servers for ups.com) not returning RRs.

-Jim P.

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