[Pdns-users] Recursor can't resolve login.authorize.net.cdn.cloudflare.net

Tony Finch dot at dotat.at
Tue Apr 6 19:49:59 UTC 2021

Seth Mattinen via Pdns-users <pdns-users at mailman.powerdns.com> wrote:
> Here's a partial trace (list refused posting the full trace). From my eye it
> looks like I'm just getting ServFail from cloudflare NS, or possibly a DNSSEC
> validation problem.

The SERVFAIL from the Cloudflare authoritative nameservers causes a DNSSEC
validation problem:

2021-04-06T12:10:24.438708-07:00 dnscache1 pdns_recursor[25026]:
	Resolved 'cloudflare.net' NS ns4.cloudflare.net
	to:, 2400:cb00:2049:1::c629:df83

2021-04-06T12:10:24.438946-07:00 dnscache1 pdns_recursor[25026]:
	Trying IP,

2021-04-06T12:10:24.439199-07:00 dnscache1 pdns_recursor[25026]:
	ns4.cloudflare.net (
	returned a ServFail, trying sibling IP or NS

(repeat until everything failed)

f.anthony.n.finch  <dot at dotat.at>  https://dotat.at/
Great Orme Head to the Mull of Galloway: North or northwest 5 or 6,
occasionally 7 at first, backing west 2 to 4 later. Moderate becoming
slight, occasionally smooth later. Squally snow showers, fair later.
Good occasionally poor.

More information about the Pdns-users mailing list