Openfire access from the internet with authentication using Active Directory

Hello,

I have one question, can you help me please.

I attached a file to see the diagram that I have, and I want to know if is it possible to do it.

Connect openfire with another in DMZ (S2S connexion)

Connect both openfire with the same Active Directory

My purpose is to allow users inside the company to connect to the openfire  with Active directory authentication, and users outside the company with Active Directory too.

example: user (admin@domain.com) can connect to the openfire from inside and outside the campany using the same authenttication (Active Directory).

Is it possible to do that with my diagram ? or if you have another solution?

Thank you.