Issues configuring delegated subdomain zone

[Bob Harold]

On Wed, Sep 12, 2018 at 5:49 AM BARAJAS BERMEJO, Sergio <
Sergio.BARAJAS at econocom.com> wrote:

> Hello,
> 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:
> midominio.principal.hosting.com
> If we make a "dig" query, putting the hosting server's NS as the domain
> name server:
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> *dig @ns1.hosting.com <http://ns1.hosting.com>
> midominio.principal.hosting.com <http://midominio.principal.hosting.com> ;
> <<>> DiG 9.10.3-P4-Debian <<>> @ns1.hosting.com <http://ns1.hosting.com>
> midominio.principal.hosting.com <http://midominio.principal.hosting.com> ;
> (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 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION: ;midominio.principal.hosting.com
> <http://midominio.principal.hosting.com>. IN A ;; AUTHORITY SECTION:
> midominio.principal.hosting.com <http://midominio.principal.hosting.com>.
> 125 IN NS sb2.principal.hosting.com <http://sb2.principal.hosting.com>.
> midominio.principal.hosting.com <http://midominio.principal.hosting.com>.
> 125 IN NS sb1.principal.hosting.com <http://sb1.principal.hosting.com>. ;;
> ADDITIONAL SECTION: sb1.principal.hosting.com
> <http://sb1.principal.hosting.com>. 125 IN A xxx.xxx.xxx.52
> sb2.principal.hosting.com <http://sb2.principal.hosting.com>. 125 IN A
> xxx.xxx.xxx.53 ;; Query time: 12 msec ;; SERVER:
> 31.193.224.20#53(31.193.224.20) ;; WHEN: Wed Sep 12 08:09:36 CEST 2018 ;;
> MSG SIZE rcvd: 133*
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> From which we deduce several things:
>
>
>    1. That in the zone principal.hosting.com of the main server of the
>    hosting there are created two registers of type A:
>    1.
> *sb1.principal.hosting.com <http://sb1.principal.hosting.com>. 125 IN A
>       xxx.xxx.xxx.52 sb2.principal.hosting.com
>       <http://sb2.principal.hosting.com>. 125 IN A xxx.xxx.xxx.53*
>    2. That the authorized DNS servers on the subdomain
>    midominio.principal.hosting.com are:
>    *sb1.principal.hosting.com <http://sb1.principal.hosting.com>* y el *sb2.principal.hosting.com
>    <http://sb2.principal.hosting.com>*
>
> Having said that, in my vps I have defined the following:
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> *; 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


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> * 10 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 86400 ) ;
> Negative Cache TTL ; REGISTROS NS sb1.*
> *principal.hosting.com <http://principal.hosting.com>. NS sb2.*
> *principal.hosting.com <http://principal.hosting.com>. IN MX 10 mail.*
> *midominio.principal.hosting.com <http://midominio.principal.hosting.com>.
> sb1 IN A *
> *xxx.xxx.xxx.52 sb2 IN A *
> *xxx.xxx.xxx.53 www IN A *
> *xxx.xxx.xxx.53 mail IN A *
>
> *xxx.xxx.xxx.53 webmail IN CNAME mail * IN A **xxx.xxx.xxx.53*
>
>
> However I can not get it to solve for example
> www.midominio.principal.hosting.com What am I doing wrong?.
> Thank you very much in advance
>
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