[Pdns-users] Howto use pdns as DNS proxy with multiple recursion servers as source

[abang at t-ipnet.net]

Hi Hubert,

> is it possible to use pdns as something like a DNS-Proxy plus autoritative 
> part? In our environment we have a backend server, which is able to contact 
> three DNS-Servers wich work as forwarders and autoritative Server in one. 
> Some times one of this server is down. At the moment we have a pdns 2.9.21.1 
> on CentOS 5.4 running, wich has only the capability to connect to one 
> recursor with the recursor statement in pdns.conf. If one of the three server 
> is down and the one is configured, we have to manually add an alternative 
> server and restart pdns.
> 
> We would like to have something that choose the nameserver wich is up 
> automatically.

maybe you can use the PowerDNS recursing nameserver (3.1.7.2) with this 
configuration:

auth-zones=your_domain=your_zone_file
forward-zones=.=1.2.3.4;1.2.3.5;1.2.3.6

So all except your_domain will forwarded to one of the three forwarders.

Winfried