[dns-operations] Why would an MTA issue an ANY query instead of an MX query?
postmaster at dtnx.net
Tue Jun 12 18:13:07 UTC 2012
On Jun 12, 2012, at 14:46, Stephane Bortzmeyer wrote:
> On Sun, Jun 10, 2012 at 01:25:06PM +0200,
> DTNX Postmaster <postmaster at dtnx.net> wrote
> a message of 37 lines which said:
>> Google is known to be obsessed with latency, for example, so I
>> wouldn't be suprised if they deliberately request ANY and then parse
>> and cache the results for a multitude of uses.
> But that's speculation. I checked the ANY requests coming into .FR
> name servers and Google (which should be an important user) does not
We are seeing them from 18.104.22.168/16, which is a range owned by
Google, and they resolve to '*.1e100.net', a domain owned by Google.
I do not know why they originate there; from the queries it seems that
they may be the resolvers in use by the crawler bots, Gmail, or their
I am speculating about the purpose of those requests, of course, but I
am not making them up ;-)
Also, they seem perfectly well behaved.
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