Configure the conditional forwarder

Follow this Microsoft AD article Assign a Conditional Forwarder for a Domain Name, and use these settings and choices:

1. In the AD DNS Manager -> Create a New Conditional Forwarder, under DNS Domain: Use the domain name AMS supplied to you; for example, A523434123.amazonaws.com.

2. Under IP addresses of the master servers: Add the AMS-supplied IP addresses. Make sure there isn’t a connection problem by validating both addresses.

3. Select Store this conditional forwarder in Active Directory and replicate as follows: All DNS servers in this domain and press OK.