You are a messaging professional. Your company uses a Microsoft Exchange

Server 2007 messaging system. Your company has a single Microsoft Active Directory forest.

Your company acquires another company. The acquired company has a separate Active Directory forest

and also uses an Exchange Server 2007 messaging system.

You configure a two-way forest trust between the two forests. You configure SMTP connectors in both

the Exchange organizations to facilitate message routing between the two messaging systems.

All users in both the companies use Microsoft Office Outlook 2007.

Users in each company report that they are unable to use Office Outlook 2007 to schedule users from the

other company for meetings.

You need to enable users in both the companies to view each others calendar free/busy information.

What should you do to enable users in both the companies to view each others calendar free/busy information?

A.
Deploy Microsoft Identity Integration Server (MIIS) and configure the Global Address List (GAL)
synchronization feature. Modify the SMTP connectors between the Exchange organizations to use externally
secure authentication option.

B.
Install a Microsoft Exchange Server 2003 server into a new Exchange organization. Configure the
Inter-Organization Replication tool to replicate system public folders between the other two Exchange
organizations.

C.
Deploy Microsoft Identity Integration Server (MIIS) and configure the Global Address List (GAL)
synchronization feature. On the Client Access Servers, configure the Availability service between the two
companies.

D.
Install a Microsoft Exchange Server 2003 computer in each organization. On the Client Access Servers,
configure an Offline Address Book (OAB) distribution to enable public folder distribution for the OAB.