401 After you create an Exchange Virtual Server, you cannot rename it. If you want to rename an Exchange Virtual Server after it has been created, you must remove it and then re-create it with another name. For information about how to remove an Exchange Virtual Server from a cluster, see "Removing an Exchange Virtual Server" in the Exchange Server 2003 Administration Guide (http://go.microsoft.com/fwlink/?linkid=21769). 12. If the operation was successful, a dialog box appears indicating that you have successfully created the Exchange Virtual Server. The Exchange Virtual Server you created will now appear in Exchange System Manager. However, if the operation was not successful, a dialog box appears indicating why the process failed. The New Resource Wizard remains open, so it is possible to go back in the wizard, remedy any problems, and then click Finish again. 13. After the Exchange Virtual Server is created, in Cluster Administrator, right-click the new Exchange Virtual Server, and then click Bring Online. 402 How to Move an Existing Disk Resource into an Exchange Virtual Server in a Windows Server Cluster This topic explains how to move an existing disk resource into an Exchange Virtual Server in a Windows Server cluster. Procedure To move an existing disk resource into an Exchange Virtual Server in a Windows Server Cluster 1. In Cluster Administrator, click the group that contains the physical disk resource you want to move to the Exchange Virtual Server. The node on which you create the Exchange Virtual Server must own this group. If this is not the case, first move the group to this node. You can move the group back to the original node after the move. 2. Drag the physical disk resources to the Exchange Virtual Server. After moving the disk resource, it appears as a resource of the Exchange Virtual Server. An Exchange Virtual Server after adding two physical disk resources 403 How to Add a Mounted Drive to an Exchange Virtual Server in a Windows Server Cluster This topic explains how to add a mounted drive to an Exchange Virtual Server in a Windows Server cluster. 404 Before You Begin This procedure applies only to server clusters running Windows Server 2003. Mounted drives not supported in Windows 2000 server clusters. Procedure To add a mounted drive to an Exchange Virtual Server in a Windows Server cluster 1. Open Cluster Administrator. 2. In the console tree, right-click the Exchange Virtual Server, and then click Bring Online. 3. Ensure the disks to be mounted have been added to the Exchange Virtual Server: If the root disk resource already exists, see How to Move an Existing Disk Resource into an Exchange Virtual Server in a Windows Server Cluster. If the root disk resource does not exist, see How to Create a 405 Physical Disk Resource for an Exchange Virtual Server in a Windows Server Cluster. 4. To add a disk to be mounted on the root disk to the Exchange Virtual Server, perform the following steps: a. Right-click the physical disk resource and then click Properties. b. In Properties, click the Dependencies tab. c. Click Modify. d. In Modify Dependencies, add the root disk to the list of dependencies. 5. Click OK twice. For More Information For detailed information about how to mount a disk to a root disk, see "Using NTFS mounted drives" in Windows Server 2003 Help. 406 How to Support Multiple SMTP Domains in a Front-End and Back- End Topology If you run Exchange 2003 in a front-end and back-end topology that includes multiple SMTP namespaces, you must create additional HTTP virtual servers in the Exchange Virtual Server for each domain namespace. For example, if contoso.com hosts Exchange Server 2003 for both tailspintoys.com and wingtiptoys.com, three virtual servers are necessary—the default virtual server, a virtual server for tailspintoys.com, and a virtual server for wingtiptoys.com. This configuration provides maximum flexibility in determining which resources are available to each hosted company. Procedure To support multiple SMTP domains in a front-end and back-end topology 1. How to Create an HTTP Virtual Server in Exchange System Manager. 2. How to Create an HTTP Virtual Server Resource for an Exchange Virtual Server in a Windows Server Cluster. 407 3. How to Create Virtual Directories for an Exchange Virtual Server in a Windows Server Cluster. How to Create an HTTP Virtual Server in Exchange System Manager When you create an Exchange Virtual Server, during the creation of the Exchange System Attendant resource, Exchange creates an HTTP virtual server resource. This topic explains how to use Exchange System Manager to create an HTTP virtual server. Before You Begin The following steps must be repeated for each Exchange Virtual Server in the cluster. 408 Procedure To create an HTTP virtual server in Exchange System Manager 1. Open Exchange System Manager. 2. In the console tree, expand Servers, expand the server that you want to configure as a back-end server, and then expand Protocols. 3. Right-click HTTP, point to New, and then click HTTP Virtual Server. 4. In Properties, in the Name box, type the name of your front-end server. 5. Next to the IP Address list, click Advanced. 6. In Advanced, under Identities, select the default entry, and then click Modify. 7. In Identification, in the IP address list, select the IP address of this Exchange Virtual Server (the back-end server). This IP address must match the IP address resource value you previously configured for the 409 back-end server. The Identification dialog box 8. In the Host name box, type the host header of the front-end server. This is the name by which the clients access the front-end server. The host header for the Exchange Virtual Server must map to the host header on the front-end server. Note: Client requests to the front-end server use a specific host, such as http://mail.contoso.com. A virtual server on the front-end must have the "mail.contoso.com" host header configured. The front-end 410 server then proxies the request to the back-end server, which must also have the host header configured on a virtual server. 9. Verify that TCP port is set to 80, and then click OK. 10. In Advanced, if you want to add an additional identity, click Add , and perform Steps 6 through 8 again. Note: Consider adding several identities to the virtual server that list all the ways that a user might access the front-end server. For example, if a front-end server is used both internally and externally, consider listing both a host name and a fully qualified domain name, such as "mail" for internal access and "mail.contoso.com" for external access. 11. In Advanced, click OK twice to create the new HTTP virtual server. . about how to remove an Exchange Virtual Server from a cluster, see "Removing an Exchange Virtual Server& quot; in the Exchange Server 2003 Administration Guide (http://go .microsoft. com/fwlink/?linkid=21769) to server clusters running Windows Server 2003. Mounted drives not supported in Windows 2000 server clusters. Procedure To add a mounted drive to an Exchange Virtual Server in a Windows Server. virtual servers in the Exchange Virtual Server for each domain namespace. For example, if contoso.com hosts Exchange Server 2003 for both tailspintoys.com and wingtiptoys.com, three virtual servers