[Samba] which DNS backend ?

Rowland penny rpenny at samba.org
Mon Feb 29 10:28:59 UTC 2016

On 29/02/16 09:42, Reindl Harald wrote:
> Am 29.02.2016 um 10:10 schrieb Rowland penny:
>> Everything you say is valid except for when it comes to AD dns.
>> When you want data from a zone, you start with the SOA record, you ask
>> 'who holds the records for this zone?', it replies with the nameserver
>> that holds the zone records. OK so far ?
>> Only problem is that with AD, *every* DC that runs a dns server holds
>> the zone records. Now if you have only one NS record in the SOA (or if
>> only one NS record is returned, like the internal dns server does), then
>> only one DC will be asked for the zone records, if this DC is down, you
>> don't have a nameserver to ask!
> than its a bug in the internal dns server only return one NS record

Totally agree

>> Every windows DC that runs a dns server is authoritative for the dns
>> domain and has a SOA record. The only way I have found of doing this
>> with a Samba DC, is to use Bind9 and add the second DCs NS record to the
>> SOA, this SOA is stored in AD
> how would a SOA record look like with two NS records?

There was a thread dealing with this in December, see here for what I 
posted then:




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