[dns-operations] NXDOMAIN and negative caching
mnsmitasin at lbl.gov
Tue Feb 2 16:42:42 UTC 2016
Thanks, everyone, for the prompt and informative responses. We'll be
trying to work with the operators of those authoritative servers (/the
load balancers in front of them) on a fix, though I may reach out if
we're unable to get in contact with someone at that org via the usual
> On 2/1/2016 3:56 PM, Michael Sinatra wrote:
> (even if it isn't one of our servers that's causing the problem).
It's not =) But it was your building that reported it!
LBLnet Services Group
Lawrence Berkeley National Laboratory
On 2/2/2016 2:32 AM, Tony Finch wrote:
> Andrew Sullivan <ajs at anvilwalrusden.com> wrote:
>>> - An NXDOMAIN indicates /no/ records exist for that name.
>> Almost. With DNSSEC, you'll get records for that name, but they prove
>> its non-existence.
> Only if you happen to query for an NSEC3 owner name :-)
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