[Pdns-users] PowerDNS suddenly refuses to resolve

[Laurie Brown]

Hi all,

One of my pdns name servers has suddenly stopped resolving, giving a
status to dig of status: REFUSED. I have no idea why as it was working
perfectly well for several days (it's a new installation).

My other nameserver, which is a renamed clone of this one, continues to
work perfectly well. Thankfully!

I'm using PowerDNS 4.2.1-1build2, on Ubuntu Server 20.04, on a Digital
Ocean VPS. Firewalling is not an issue as port 53 is open. I have the
tinydns backend enabled as I migrated from DJBdns, and haven't had time
to get an sql file sorted out for import.

Here's the dig result in full:

dig convergent-ict.com NS @ns6.convergent-ict.com

; <<>> DiG 9.16.1-Ubuntu <<>> convergent-ict.com NS @ns6.convergent-ict.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 53199
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: d07f034bc11da98d0100000060d465f80d8dc0242f4c7077 (good)
;; QUESTION SECTION:
;convergent-ict.com.		IN	NS

;; Query time: 31 msec
;; SERVER: 165.22.194.246#53(165.22.194.246)
;; WHEN: Thu Jun 24 12:01:12 BST 2021
;; MSG SIZE  rcvd: 75

Obviously the errant server is ns6.convergent-ict.com, and for
completeness, the one that's working is ns7.convergent-ict.com

Thanks in advance for any help.

Cheers, Laurie.