[dns-operations] weird queries for mx1.mx2.mx1.mx2...

Petr Špaček petr.spacek at nic.cz
Tue Mar 31 08:55:03 UTC 2020

On 30. 03. 20 21:07, John Levine wrote:
> In article <02fe7bae-fec6-f314-b189-4214b75cef60 at nic.cz> you write:
>> This is query list for domain truckinsurancekentucky.com:
>> mx1.mx1.mx1.mx1.mx1.mx2.mx1.mx2.mx1.mta-sts.mx1.mx1.mx2.mx2.mta-sts.mx1.mx1.truckinsurancekentucky.com. AAAA
>> Domain truckinsurancekentucky.com is not the only one with this weird behavior. Does anyone have an idea what is causing this?
> It sure looks like misconfigured mta-sts.
> That domain is dead, got another live one we could look at and see how it's configured?  

These seem to be alive:

mx1.mx1.mx2.mx2.mx2.mx1.mx2.mx1.mta-sts.mx2.mx1.mx1.mx2.mx2.mx2.mx1.mx2.maxonsoftware.com. A

mx2.mx1.mx2.mx1.mx1.mx2.mta-sts.mx1.mx2.mx2.mx1.mx2.mx1.mx2.cineversityoneonone.net. A

mx2.mx1.mx1.mx1.mx2.mx2.mx2.mta-sts.mx1.mx2.mx1.mx1.mta-sts.mx2.mx2.mx2.effluentialtechnologies.net. A

Petr Špaček  @  CZ.NIC

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