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

Server 2007 messaging system and a Microsoft Exchange Server 2003 messaging system.

Your company acquires another company. The acquired company uses an Exchange Server 2003

messaging system.

You enable message routing between the two messaging systems. Users in both companies use Microsoft

Office Outlook 2007 and Microsoft Outlook Web Access (OWA). The OWA connections are made as

secure as possible by using Secure Sockets Layer (SSL). The OWA server certificates are issued by the

respective Enterprise certification authorities that are installed in each of the Microsoft Active Directory

forests.

Both the companies extensively use public folders.

You need to ensure that public folder data from both the messaging systems is available to users of both the companies.

What should you do to ensure that public folder data from both the messaging systems is available to users of both the companies?

A.
On an Exchange Server 2003 computer in your company, install and configure the Inter-Organization
Replication tool.

B.
On a Hub Transport server in your company, configure an accepted domain for the acquired company.
Configure the accepted domain as an internal relay domain.

C.
Install a Client Access Server in the acquired company. On a Client Access Server in each messaging
system, configure the Microsoft Exchange Server 2007 Availability service.

D.
On the Root Certificate Authority in both the messaging systems, implement cross-certification at the
Enterprise Root CA level. Provide the URL of an Exchange Server 2003 front-end server in the acquired
company to users in your company. Provide URL of an Exchange Server 2003 front-end server in your company
to users in the acquired company.