How to Install Exchange 2007 in an Existing Exchange Server 2003 Organization

How to Install Exchange 2007 in an Existing Exchange Server 2003 Organization

Applies to: Exchange Server 2007, Exchange Server 2007 SP1 Topic Last Modified: 2007-03-14

This topic explains how to use Exchange Server 2007 Setup or unattended installation to install the first Microsoft Exchange Server 2007 server in an existing Exchange organization.

You can't perform an in-place upgrade from Exchange Server 2003 or Exchange 2000 Server to Exchange 2007. However, you can install an Exchange 2007 server into the existing Exchange organization and then move the Exchange resources, such as mailboxes, public folders, and connectors to Exchange 2007. After you perform this procedure, you will be running in a coexistence mode. You can maintain this mode for an indefinite period of time, or you can immediately complete the transition to Exchange 2007 by moving all resources from Exchange 2003 to Exchange 2007 and then decommissioning the Exchange 2003 servers.
Note:
There are no procedural differences between Exchange 2007 coexistence with Exchange 2003 and Exchange 2007 coexistence with Exchange 2000. Any procedures or documentation that refer to Exchange 2003 only also apply to Exchange 2000.

When you install Exchange 2007 in an existing Exchange 2003 organization, Setup performs the following coexistence-specific tasks:

* It creates the Active Directory universal security group ExchangeLegacyInterop. This group is granted the permissions that allow the Exchange 2003 and Exchange 2000 servers to send e-mail to the Exchange 2007 servers.
* It creates the Exchange 2007 Administrative Group. This administrative group is called Exchange Administrative Group (FYDIBOHF23SPDLT).
Caution:
Do not move Exchange 2007 servers out of Exchange Administrative Group (FYDIBOHF23SPDLT) and do not rename Exchange Administrative Group (FYDIBOHF23SPDLT) by using a low-level directory editor. Exchange 2007 must use this administrative group for configuration data storage. We do not support moving Exchange 2007 servers out of Exchange Administrative Group (FYDIBOHF23SPDLT) or renaming of Exchange Administrative Group (FYDIBOHF23SPDLT).
* It creates the Exchange 2007 Routing Group. This routing group is called Exchange Routing Group (DWBGZMFD01QNBJR).
Caution:
Do not move Exchange 2007 servers out of Exchange Routing Group (DWBGZMFD01QNBJR) and do not rename Exchange Routing Group (DWBGZMFD01QNBJR) by using a low-level directory editor. Exchange 2007 must use this routing group for communication with earlier versions of Exchange. We do not support moving Exchange 2007 servers out of Exchange Routing Group (DWBGZMFD01QNBJR) or renaming of Exchange Routing Group (DWBGZMFD01QNBJR)
* It creates a two-way routing group connector between Exchange 2007 and a selected Exchange 2003 bridgehead server. Exchange 2007 and Exchange 2003 use different routing topologies. You must configure a routing group connector to enable mail flow between the Exchange versions.

Note:
You can install Exchange 2007 in a native mode Exchange organization. However, if you create a new forest in which to install Exchange 2007, you cannot later add earlier versions of Exchange. This scenario is not supported.

You complete Exchange 2007 installation by performing several tasks. You can complete all these tasks at the same time, or you can perform some of the tasks before you start Exchange 2007 server role installation. To complete installation, follow these steps:

* Install prerequisite tools You can install the prerequisite tools on the computer where you will install Exchange 2007 before you install the server roles. The prerequisite tools are Microsoft .NET Framework 2.0, Microsoft Management Console 3.0, and Microsoft Windows PowerShell. Links to these tools are provided in Exchange Server 2007 Setup.
* Prepare the Active Directory directory service You can extend the Active Directory schema and create the Active Directory objects and universal security groups to support Exchange 2007 before you install the server roles. Run setup.com /PrepareAD from the command line on the domain controller that is the schema master at the forest root. When you run setup.com /PrepareAD, the task setup.com /PrepareLegacyExchangePermissions also runs to create the universal security group that is granted permissions to send e-mail to Exchange 2007 Hub Transport servers. If you do not perform this task before you start installation, it will run during installation. For more information, see How to Prepare Active Directory and Domains.
* Install server roles You can install Exchange 2007 by using Exchange Server 2007 Setup, or perform an unattended installation by running setup.com from the command line. You can select to perform a typical installation to install the Mailbox, Hub Transport, and Client Access server roles, or you can select to perform a custom installation to install one or more server roles. If the Exchange 2003 organization has front end servers, the Client Access server role is typically the first role deployed. You must install the Hub Transport server role and the Mailbox server role to have a fully functional Exchange 2007 organization.

Before You Begin

Before you begin, follow these steps:

* Create a transition plan. If you plan to maintain a coexistence environment for any period of time, see Planning for Coexistence.
To complete your transition plan, see the following topics:
o Upgrading to Exchange 2007
o Best Practices for Transitioning an Exchange Organization
* Verify that the server on which you will install Exchange 2007 meets the system requirements for the server roles that you are installing. For more information, see Exchange 2007 System Requirements.
* Verify that your existing Exchange organization is running in native mode. An Exchange organization is running in native mode should not contain any servers that are running a version of Exchange previous to Exchange 2000 Server. For more information, see Coexisting with Exchange Server 2003 and Exchange 2000 Server.

To perform the following procedure, the account you use must be delegated membership in the Schema Administrators group if you have not previously prepared the Active Directory schema.

If you are installing the first Exchange 2007 server in the organization, the account you use must have membership in the Enterprise Administrators group.

For more information about permissions, delegating roles, and the rights that are required to administer Exchange 2007, see Permission Considerations.
Procedure
To use Exchange Server 2007 Setup to install Exchange 2007 in an existing Exchange organization

1.

Log on to the server on which you want to install Exchange 2007.
2.

Insert the Exchange Server 2007 DVD into the DVD drive. If Setup.exe does not start automatically, open the DVD directory, and then double-click Setup.exe.
3.

On the Start page, complete Steps 1 through 3 to install the prerequisite tools.
Note:
If you already have Microsoft .NET Framework 2.0, Microsoft Management Console (MMC) 3.0, and Windows PowerShell installed, these steps will be unavailable. If you have not installed Microsoft .NET Framework 2.0, Setup will link to .NET Framework Developer Center. If you have not installed Microsoft Management Console (MMC) 3.0, Setup will link to MMC 3.0 update is available for Windows Server 2003 and for Windows XP. If you have not installed Microsoft Windows PowerShell, Setup will link to Windows PowerShell 1.0 English Language Installation Packages for Windows Server 2003 Service Pack 1 and for Windows XP Service Pack 2.
4.

On the Start page, click Step 4: Install Microsoft Exchange. Setup copies the setup files to the computer on which you are installing Exchange 2007.
5.

In Exchange Server 2007 Setup, on the Introduction page, click Next.
6.

On the License Agreement page, select I Accept the terms in the license agreement, and then click Next.
7.

On the Error Reporting page, select the appropriate selection and then click Next.
8.

On the Installation Type page, click Typical Exchange Server Installation or Custom Exchange Server Installation. If you want to change the path for the Exchange Server 2007 installation, click Browse, locate the appropriate folder in the folder tree, and then click OK. Click Next.
Note:
If you select the Typical Exchange Server Installation option, you will be unable to install the Unified Messaging server role, Edge Transport server role, or clustered mailbox servers during this installation. You can install additional server roles later by using Setup.com or Add or Remove Programs from Control Panel.
9.

On the Mail Flow Settings page, click Browse to select an Exchange 2003 bridgehead server that is located in the routing group to which you will create the initial routing group connector.

Figure 1 Mail Flow Settings page