How to make a shared Exchange address book for all users from different domains?

Question

Email

There is Exchnage Server, it is necessary to export all users from different mail servers to AD contacts. There is an xls file with all postal addresses.

Answer 1

Select OU, Create mail-enabled-contacts in local AD. Force an OAB update or wait for an update cycle. (On Outlook in cache-mode, this can take up to 24 hours).