Company Splitted Active Directory model. Your company has one internal Active Directory and one separate Active Directory for company's sales representatives. You want all user objects and groups of the sales reps AD to be visible to your internal Outlook/Exchange users (using the Global Address List). Vice versa: You want all sales reps have access to information of a subset of the internal users.
* Company take-over
Because of a company take-over you have to integrate different Active Directories and Exchange organizations. You have to share all or subsets of all user and group information for Outlook/Exchange users in the Global Address List.
*Company & Partners
Your company has a partner company and you want to share some user and group information for Outlook/Exchange users in the Global Address List.
*Migration
Your company wants to migrate to a new Exchange organization. You have to ensure that all migrated users may send messages to users in the original...