Dear All,

Looking for suggestion on trust requirement.

Forest A (Exchange Mailbox) Forest B (Account Forest) Forest C (Resource Forest)

There is a forest Trust between Forest B and Forest C > Result users from forest B can login on VDI desktops.

Now we are going to introduce Exchange 2103 in our Org, we will create different forest A for the same.

We will create Trust between Forest A and Forest B > so that Users can access the mailbox

Now the question is do i need to create a Trust between Forest A and Forest C > As users will acess the mailbox from VDI environment from different forest.

Thanks & Regards

yes, we have to create a trust btwn Forest A & C to access mailboxes.

Hi,

I agree with John, because forest trusts can only be created between two forests and cannot be implicitly extended to a third forest.
For example, if a forest trust is created between forest 1 and forest 2, and a forest trust is also created between forest 2 and forest 3, forest 1 will not have an implicit trust with forest 3.

Thanks