We have two Window 2003 Domains that have a Forest Trust. The Dynamics 2009 R2 Server and Sql Server 2005 are setup in a 3-Tier environment using Kerberos Authentication in Domain A.
Users from Domain B, remote desktop to a Terminal Server in Domain A and then attempt to login to Dynamics using their Domain B credentials. That is failing on the Sql Login. The Sql Logs indicate NT Authentication\Anonymous Login Failed.
When I test the users login from Domain B by opening RTC on the Dynamics Server, they successfully authenticate to Sql (2 Tier) method.
Can you authenticate using Kerberos across Domains? How would you approach this without having to setup separate for Domain B in Domain A or change to 2-Tier setup?