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

Marco Davids (SIDN) marco.davids at sidn.nl
Tue Mar 31 11:34:53 UTC 2020


Hi Petr,

We see something similar, albeit not so extreme.

It's less deep, only 2 levels:

mx1.mx1.example.nl

But we also saw this:

mx1.mx1.nl

--
Marco


Op 30-03-20 om 11:18 schreef Petr Špaček:

> while debugging some resolution problems we have notices really weird queries, seemingly related to e-mail delivery. 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

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