Massive increase of SERVFAIL after April 28th 2025.

[Rob McEwen]

In that case, someone smarter and more knowledgeable on this list will 
hopefully help you. But first - one last suggestion - if you find that 
forwards to 3rd party servers work - but turning those off causes issues 
- you should probably make sure that your "root hints" are updated, and 
purge any caching (rndc flush), then restart BIND. Maybe you've already 
done that? But if not, it's worth a try before digging deeper.

If that doesn't fix this, then hopefully someone else on this list can 
help you.

Rob McEwen, invaluement



------ Original Message ------
>From vincent at cojot.name
To "Rob McEwen" <rob at invaluement.com>
Cc bind-users at lists.isc.org
Date 5/1/2025 11:28:23 AM
Subject Re: Massive increase of SERVFAIL after April 28th 2025.

>Hi Rob,
>
>Unfortunately, as soon as I remove the 'forwarders' in any of my named servers, the problem comes back. The output in my previous message was captured just a few minutes ago after I had disabled 'forwaders' in one of my bind servers.
>
>Regards,
>
>Vincent
>
>
>On Thu, 1 May 2025, Rob McEwen wrote:
>
>>From vincent at cojot.name
>>       until a few days ago (April 28th?) when the amount of SERVFAIL started going ballistic and started preventing the resolution of a lot of DNS names on the internet to
>>       the point where DNS was unusable
>>
>>
>>I strongly suspect that this was caused (even if indirectly?) by the MASSIVE and many-hours-long power outages in Europe, mainly in Spain and Portugal. That started on April 28,
>>2025, at approximately 6:33 a.m. Eastern Time (ET) - and the majority of it lasted almot 24 hours.
>>
>>https://www.france24.com/en/europe/20250430-what-we-know-so-far-about-the-massive-blackout-that-hit-spain-and-portugal
>>
>>Hopefully, you're not seeing any more of these errors now?
>>
>>Rob McEwen, invaluement
>>
>>
>>
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