Issues configuring delegated subdomain zone

Wed Sep 12 18:31:23 UTC 2018

Thanks this is solver, now I have another problem.

I will send a new message

De: Bob Harold <rharolde at>
Enviado: miércoles, 12 de septiembre de 2018 16:47
Cc: bind-users at
Asunto: Re: Issues configuring delegated subdomain zone

On Wed, Sep 12, 2018 at 5:49 AM BARAJAS BERMEJO, Sergio <Sergio.BARAJAS at<mailto:Sergio.BARAJAS at>> wrote:
I have an issue configuring delegated subdomain zone from one NS to another one.
For security reasons I will obviously not put real domain data (I imagine you will understand).

Let's suppose that the delegated subdomain is:<>
If we make a "dig" query, putting the hosting server's NS as the domain name server:


; <<>> DiG 9.10.3-P4-Debian <<>><><>
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40831
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3
;; WARNING: recursion requested but not available

; EDNS: version: 0, flags:; udp: 4096
;<>. IN A

;; AUTHORITY SECTION:<>. 125 IN NS<>.<>. 125 IN NS<>.

;; ADDITIONAL SECTION:<>. 125 IN A<>. 125 IN A

;; Query time: 12 msec
;; WHEN: Wed Sep 12 08:09:36 CEST 2018
;; MSG SIZE rcvd: 133

>From which we deduce several things:

  1.  That in the zone<> of the main server of the hosting there are created two registers of type A:
     *<>. 125 IN A<>. 125 IN A
  2.  That the authorized DNS servers on the subdomain<> are:<> y el<>

Having said that, in my vps I have defined the following:

; BIND reverse data file for empty rfc1918 zone
; DO NOT EDIT THIS FILE - it is used for multiple zones.
; Instead, copy it, edit named.conf, and use that copy.

$TTL 86400
@ IN SOA sb1. sb2. mail. (

The first field after "SOA" is the *ONE* master server for the  domain.  You cannot list two.  Should be:
@ IN SOA sb1. mail. (

Bob Harold

10 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
86400 ) ; Negative Cache TTL
IN MX 10<>.
sb1 IN A
sb2 IN A
www IN A
mail IN A
webmail IN CNAME mail
* IN A

However I can not get it to solve for example<> What am I doing wrong?.
Thank you very much in advance

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