3.1.1 DNS with internal/external zone

Hello there,
OS X 10.9.2 and Server 3.1.1
I have a server behind nat, I want to configure dns with 2 zone (internal/external), one for private lan and one for internet.
Internet IP : 12.12.12.12 -> NAT -> Server IP : 10.10.10.10
Domain : mydomain.com
I want in private network server.mydomain.com have ip 10.10.10.10 and from internet 12.12.12.12, how I can configure that zones ?!
For example if I ping from lan server.mydomain.com to have reply from 10.10.10.10 and if i ping from internet to have reply from 12.12.12.12
I try to configure with Server Admin but from internet i have response with internal ip
Please help me to configure that split horizon dns.
Thank you !
Adrian

adriandascalu wrote:
Only lan DNS (192.168.0.10) where I have private zone of dns, and 8.8.8.8 .. All works fine now.
It'll work for a while, and depending on which translation is requested and with which DNS server is queried.  Should there be DNS translation failures for local addresses, then the client is probably aimed at Google DNS and will then probably need to eliminate that DNS server as an option for queries.  Not all DNS clients will try multiple servers, and Google DNS cannot return local translations, after all.
Unrelated: if you're planning on using a VPN, 192.168.0.0/24 and 192.168.1.0/24 aren't the best choices for a NAT'd network — those two are very commonly used in home networks and coffee shops and such.  VPNs are based on IP routing and IP routing is based on the subnets on the local and remote ends of the VPN, and IP routing doesn't generally work well with the same subnet present on both ends of the connection.

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