NAT Reflection - Help

[Rafael Santos 92]

Hello!

I need help on NAT Reflection.
I'm deploying a new IIS Server on Windows Server 2012. The server is on my LAN and will be accessed by any host.
I created a NAT rule pointing to the server and the port (8010).
What happen is that I got redirected by using external IPs but not on LAN.
I tried to change NAT Reflection field on the NAT rule to "Pure NAT" and "NAT + Proxy" but didnt work.

I see some people saying to create a new DNS zone on Windows Server. Thing is that people on the LAN wont access our website if I do it (the IIS DNS is a subdomain).

Scenario:
teste.com - Our website (external WAN)
iis.teste.com - IIS Server (point to my WAN Interface)

Can someone enlight me?

Thank you by advance.