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<body><div>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 (<span>rndc flush)</span><span>, then restart BIND. Maybe you've already done that? But if not, it's worth a try before digging deeper.</span></div><div><br /></div><div>If that doesn't fix this, then hopefully someone else on this list can help you.</div><div><br /><span>Rob McEwen, invaluement</span></div><div id="signature_old" style="clear:both"><div><br /></div></div><div style="clear:both"><br /></div>
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<div>------ Original Message ------</div>
<div>From <a href="mailto:vincent@cojot.name">vincent@cojot.name</a></div>
<div>To "Rob McEwen" <<a href="mailto:rob@invaluement.com">rob@invaluement.com</a>></div>
<div>Cc <a href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</a></div>
<div>Date 5/1/2025 11:28:23 AM</div>
<div>Subject Re: Massive increase of SERVFAIL after April 28th 2025.</div></div><div><br /></div>
<div id="xa581c39ea3a9436" class="plain"><blockquote cite="3000277e-950d-1fb9-cdde-1c4e77106bef@cojot.name" type="cite" class="cite2">
<div class="plain_line">Hi Rob,</div>
<div class="plain_line"> </div>
<div class="plain_line">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.</div>
<div class="plain_line"> </div>
<div class="plain_line">Regards,</div>
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<div class="plain_line">Vincent</div>
<div class="plain_line"> </div>
<div class="plain_line"> </div>
<div class="plain_line">On Thu, 1 May 2025, Rob McEwen wrote:</div>
<div class="plain_line"> </div>
<blockquote type="cite" class="cite2">
<div class="plain_line">From <a href="mailto:vincent@cojot.name">vincent@cojot.name</a></div>
<div class="plain_line"> 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</div>
<div class="plain_line"> the point where DNS was unusable</div>
<div class="plain_line"> </div>
<div class="plain_line"> </div>
<div class="plain_line">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,</div>
<div class="plain_line">2025, at approximately 6:33 a.m. Eastern Time (ET) - and the majority of it lasted almot 24 hours.</div>
<div class="plain_line"> </div>
<div class="plain_line"><a href="https://www.france24.com/en/europe/20250430-what-we-know-so-far-about-the-massive-blackout-that-hit-spain-and-portugal">https://www.france24.com/en/europe/20250430-what-we-know-so-far-about-the-massive-blackout-that-hit-spain-and-portugal</a></div>
<div class="plain_line"> </div>
<div class="plain_line">Hopefully, you're not seeing any more of these errors now?</div>
<div class="plain_line"> </div>
<div class="plain_line">Rob McEwen, invaluement</div>
<div class="plain_line"> </div>
<div class="plain_line"> </div>
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