Hi Book,
感謝你來發帖。根據我的研究，我發現Hierarchical Address Book當前支持純本地Exchange環境，或者純Office 365環境。關于Exchange混合環境（Exchange hybrid），目前還沒有一個完美的方案來實現Hierarchical Address Book，正如這篇博客裏提到的：
Q: We are moving some of our user mailboxes to Office 365 while keeping some in our on premises infrastructure. Are the users able to see the same HAB?
A: No, we are working to resolve a possible issue of the HAB being out of sync in this hybrid deployment case. A solution will be available in the near future.
關于如何在Exchange混合環境下實現Hierarchical Address Book，我們會在以後發布一些方案。一旦有任何更新，我們會及時發布出來。感謝你的支持與理解。
Thanks,
Young