Bind to AD with Transitive Trust

Hi all,

While I am familiar with Binding OD to AD, I have been asked to bind to an AD where they are using transitive trust relationships between three different campuses back to head office.

Has anybody had any sucess in authenticating across transitive trusts and guide me in the right direction?

DSCL > Active Driectory > All Domains will only show me the AD that I am bound to. I can't see the trusted domains beyond that

Any advice appreciated!
Ger...
ACSA
Cork
Ireland