Maintained by: NLnet Labs

[Unbound-users] Cannot resolve the MX for bk.bund.de using unbound

lst_hoe02 at kwsoft.de
Wed Dec 12 23:08:51 CET 2012


Zitat von Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>:

> I cannot see why this doesn't work here on mail.charite.de or
> mail2.charite.de:
>
> root at mail2:~# dig @127.0.0.1 -t mx bk.bund.de
>
> ; <<>> DiG 9.8.1-P1 <<>> @127.0.0.1 -t mx bk.bund.de
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 59991
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;bk.bund.de. IN MX
>
> ;; Query time: 16 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Wed Dec 12 21:52:22 2012
> ;; MSG SIZE  rcvd: 28
>
> SERVFAIL? But why?


Good question, works fine here ;-)

; <<>> DiG 9.7.0-P1 <<>> @127.0.0.1 bk.bund.de MX
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2611
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 5, ADDITIONAL: 6

;; QUESTION SECTION:
;bk.bund.de.			IN	MX

;; ANSWER SECTION:
bk.bund.de.		21251	IN	MX	10 mx1.bund.de.
bk.bund.de.		21251	IN	MX	10 mx2.bund.de.

;; AUTHORITY SECTION:
bund.de.		17030	IN	NS	bamberg.bund.de.
bund.de.		17030	IN	NS	xenon.bund.de.
bund.de.		17030	IN	NS	argon.bund.de.
bund.de.		17030	IN	NS	dns-1.dfn.de.
bund.de.		17030	IN	NS	nuernberg.bund.de.

;; ADDITIONAL SECTION:
mx1.bund.de.		551	IN	A	77.87.224.163
mx2.bund.de.		551	IN	A	77.87.228.110
argon.bund.de.		17030	IN	A	77.87.224.18
xenon.bund.de.		17030	IN	A	77.87.224.71
bamberg.bund.de.	17030	IN	A	77.87.228.36
nuernberg.bund.de.	17030	IN	A	77.87.228.37

;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Dec 12 23:04:29 2012
;; MSG SIZE  rcvd: 274

Maybe a reply size/EDNS problem? What does "dig +short rs.dns-oarc.net  
txt" tell you?

Regards

Andreas