[Samba] DNS Forwarder again

[Andrew Bartlett]

We suggest pointing your clients at another DNS server, which knows
about all the things you care about, both Samba and otherwise.  

If using BIND9 I would set up zones of type 'forward' for this purpose,
then set the generic forwarder to upstream 8.8.8.8 if you want to use
Google.

https://wiki.samba.org/index.php/BIND9_DLZ_DNS_Back_End#Recommended_Arc
hitecture

Andrew Bartlett

On Wed, 2021-03-31 at 23:24 +0300, Yakov Revyakin via samba wrote:
> Thank you, Robert
> You understood my waiting.
> 
> What is about if I add nameserver line to resolve.conf like this
> 
> nameserver ThisSambaDcIp
> nameserver 8.8.8.8
> 
> and samba dns returns negative answer? Algorithm the same? Second
> line will
> never be used?
> 
> 
> 
> 
> On Wed, 31 Mar 2021 at 20:24, Robert Marcano via samba <
> samba at lists.samba.org> wrote:
> 
> > On 3/31/21 12:02 PM, Yakov Revyakin via samba wrote:
> > > Hi all,
> > > Could you help me to understand why my setting for Dns Forwarder
> > > doesn't
> > > work as waiting?
> > > I have:
> > > dns forwarder = 8.8.8.8 11.0.0.3
> > > 
> > > This way I can resolve names of samba domain as well as internet
> > > names,
> > but
> > > I can't get resolved names from 11.0.0.3 external AD domain.
> > > 
> > > I thought that google dns is recursive. Any explanation on?
> > 
> > If I understand correctly, you expect responses from both
> > forwarders.
> > That isn't how forwarding works. It ask one of them and get a
> > response.
> > Positive or negative, it will be the only response to the client.
> > You
> > can put more than one there for redundancy.
> > 
> > If you expect a response from 11.0.0.3, when the server first asked
> > 8.8.8.8, if it get a negative response, 11.0.0.3 will not be asked,
> > it
> > will only if there is a problem (timeout for example) using 8.8.8.8
> > 
> > > Thanks,
> > > J
> > > 
> > 
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-- 
Andrew Bartlett (he/him)       https://samba.org/~abartlet/
Samba Team Member (since 2001) https://samba.org
Samba Team Lead, Catalyst IT   https://catalyst.net.nz/services/samba

Samba Development and Support, Catalyst IT - Expert Open Source
Solutions