I am 99% sure the fpdns is wrong and this is not djbdns. The fpdns relies on 
subtle differences between various DNS implementations and is often wrong 
because there’s either not enough data or just not enough differences. That’s 
what I’ve seen when we started with Knot DNS - the quality implementations just 
didn’t had enough differences between than because they adhered to standards 
that fpdns just could not tell the difference.

Cheers,
--
Ondřej Surý <ond...@sury.org> (He/Him)

> On 30. 7. 2022, at 19:37, Puneet Sood <pune...@google.com> wrote:
> 
> 
> 
> 
>> On Sat, Jul 30, 2022 at 10:26 AM Dave Lawrence <t...@dd.org> wrote:
>> Greg Choules via dns-operations writes:
>> > I am including in this mail the RNAME from the SOA (same for both
>> > zones) in the hope that someone who is responsible for DNS at Sony
>> > entertainment will see this and take note.
>> 
>> And tell us what in the world DNS software they're running, and why
>> they chose it.
> 
> Jaap up-thread used fpdns to figure out the first question.
> 
> fpdns e.ns.email.sonyentertainmentnetwork.com
> fingerprint (e.ns.email.sonyentertainmentnetwork.com, 207.251.96.133): DJ 
> Bernstein TinyDNS 1.05 [Old Rules]
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