Hi All, We are using linked-mailbox model so i am quite familiar with it. But recently there is a new development and i am presented with this question: (To make things easier, User A is the ID in the accounts forest (forest A) User A1 is the ID in the resource forest (forest B) User A is already linked to the mailbox in forest B Now we have another resource forest (forest C) which is independent to forest B. So can User A have linked-mailbox in forest B and forest C? (I am guessing it is possible but i need to be sure)