Maintained by: NLnet Labs

[Unbound-users] Persistent validation failure on several sites

Wendi Chen
Fri Nov 29 18:24:05 CET 2013


HI All,

We consistently receive the following unbound logs:
131127 17:48:33 unbound: [5694:0] info: validation failure  d.t10000.u6860931751.s1385574322.i1009.v6022.503b8.z.dotnxdomain.net. A IN
131127 17:51:28 unbound: [5694:0] info: validation failure ns2.sirius-soft.at. A IN
131127 17:51:28 unbound: [5694:0] info: validation failure ns1.sirius-soft.at. A IN
131127 17:51:28 unbound: [5694:0] info: validation failure ns3.sirius-soft.at. A IN
131127 17:51:45 unbound: [5694:1] info: validation failure ns2.sirius-soft.at. A IN
131127 17:52:02 unbound: [5694:1] info: validation failure ns3.sirius-soft.at. A IN
131127 17:52:35 unbound: [689:0] info: validation failure rellim.com. A IN
131127 17:52:36 unbound: [21479:0] info: validation failure rellim.com. A IN
131127 17:52:46 unbound: [5694:0] info: validation failure rellim.com. A IN
131127 17:52:46 unbound: [5694:0] info: validation failure rellim.com. NS IN
131127 17:52:46 unbound: [5694:0] info: validation failure ns1.rellim.com. A IN
131127 17:52:46 unbound: [689:1] info: validation failure rellim.com. A IN
131127 17:52:48 unbound: [21479:1] info: validation failure rellim.com. A IN
131127 17:52:48 unbound: [21479:1] info: validation failure rellim.com. NS IN
131127 17:52:48 unbound: [21479:1] info: validation failure ns2.rellim.com. AAAA IN
131127 17:52:48 unbound: [21479:1] info: validation failure ns1.rellim.com. A IN

Is it a bug in unbound or a problem with the DNS configuration of those sites?

I ran dig commands on those sites and found all of them returned no answers.

For example,
wendi: dig rellim.com

; <<>> DiG 9.9.3-rl.13207.22-P2-RedHat-9.9.3-5.P2.fc19 <<>> rellim.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 52216
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;rellim.com.                    IN      A

;; Query time: 840 msec
;; SERVER: 192.168.58.1#53(192.168.58.1)
;; WHEN: Fri Nov 29 12:20:38 EST 2013
;; MSG SIZE  rcvd: 39

Thank you if you can give me some advices.

Best,
Wendi
 		 	   		  
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