Direct Access and Multiple Domains

Hi All

We are using Direct Access on Server 2012.

We have two domains, domain1 and domain2 they are fully trusted in Active Directory and users can work normally between the two domains with no issues.

The DA server is in “domain1” ( and all computer accounts are in domain1 )

If a user connects to Direct Access and his computer and user account is in “domain1” he can connect to Direct Access with no problems at all.

If a user connects to Direct Access and his computer account is in “domain1” and his user account is in “domain2” we see his connection in Direct Access but he can not do anything once connected.

Any ideas ?