Hi and thank you...

Small AD domain with (2) DNS servers (not split brain, we have our
externals handled by ISP) - Question is:

IN configuration, as far as "listening on" which IP address?
I have (on DNS server 1) the address to listen on as 'itself' first
and the 2nd DNS server, well, second.

On the 2nd DNS server, I have listen on to 'itself' and then the 1st DNS
server...

I get 409 errors doing this... obviously I don't understand exactly what
is the issue.

We do use forwarders to our ISP 'cached' DNS servers.
We have the 'local' DNS IPs listed in our DHCP server, not the 'external
ISP' forwarders.
I have disabled recursion.

Any is greatly appreciated. Thanks,

Doc

Read inline please.

In news:467c0538$0$11221$9a6e19ea@news.newshosting.co m,
Doc <pc-dc-doc@ca.rr.com> typed:
> Hi and thank you...
>
> Small AD domain with (2) DNS servers (not split brain, we have our
> externals handled by ISP) - Question is:
>
> IN configuration, as far as "listening on" which IP address?
> I have (on DNS server 1) the address to listen on as 'itself' first
> and the 2nd DNS server, well, second.

Are you referring to the Interfaces tab on the DNS server Properties sheet?
If you are, Listen on the IP of the internal NIC.

>
> On the 2nd DNS server, I have listen on to 'itself' and then the 1st
> DNS server...

Same as above, one big thing, if you are adding IP addresses of Interfaces
that are not on the local machine you will get 409 Errors.

<snip>

> I have disabled recursion.
On the Advanced tab or on the Forwarders tab?
These two are not the same, on the Forwarders tab "Do not use recursion"
means the server will not use its root hints to do recursive lookups. All
recursion must be done by the forwarder.
On the Advanced tab, "Disable recursion" will stop DNS from resolving any
external name, it will answer only from its own zones.



--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This s

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Kevin D. Goodknecht Sr. [MVP] typed this:
> Read inline please.
>
> In news:467c0538$0$11221$9a6e19ea@news.newshosting.co m, Doc
> <pc-dc-doc@ca.rr.com> typed:
>> Hi and thank you...
>>
>> Small AD domain with (2) DNS servers (not split brain, we have our
>> externals handled by ISP) - Question is:
>>
>> IN configuration, as far as "listening on" which IP address? I have
>> (on DNS server 1) the address to listen on as 'itself' first and
>> the 2nd DNS server, well, second.
>
> Are you referring to the Interfaces tab on the DNS server Properties
> sheet? If you are, Listen on the IP of the internal NIC.
>
>> On the 2nd DNS server, I have listen on to 'itself' and then the
>> 1st DNS server...
>
> Same as above, one big thing, if you are adding IP addresses of
> Interfaces that are not on the local machine you will get 409 Errors.
>
>
> <snip>
>
>> I have disabled recursion.
> On the Advanced tab or on the Forwarders tab? These two are not the
> same, on the Forwarders tab "Do not use recursion" means the server
> will not use its root hints to do recursive lookups. All recursion
> must be done by the forwarder. On the Advanced tab, "Disable
> recursion" will stop DNS from resolving any external name, it will
> answer only from its own zones.

Thank you Kevin - I have used the "disable recursion" Forwarder Tab - I
wanted to USE only those DNS servers provided to us by Sprint.

So reading ABOVE, it seems that the DNS server (basically as you say,
"Listen on the IP of the internal NIC".) will therefore be "listening to
itself" - even if we have two or three internal DNS servers for our
local network - (Yes, this is the Interfaces Tab on the Server
Properties DNS sheet).

Thank you... very much!