Configuration for Mailbox Role on both CAS server and remote servers

If you have an environment that includes Exchange 2007 Mailbox Role installed on the Exchange 2007 CAS server computer and also remote Exchange 2007 Mailbox servers, you need to perform additional configuration as described in this section. The steps differ depending on whether you want the Exchange 2007 CAS server to connect to remote Exchange 2007 Mailbox servers using HTTPS or HTTP.

The configuration includes adding settings to the configuration file, Exchange installation path\ClientAccess\Owa\Web.Config, on the Exchange 2007 CAS server.

Table: Web.Config settings shows the relevant settings that you can add to this file. These should be added to the AppSettings section of the file using the following format:

<add key="setting" value="value"/>

Note that entries in this file are case sensitive.

Table: Web.Config settings

Setting

Default Value

Notes

EnterpriseVault_WebDAVRequestProtocol

https

The protocol used by the Exchange 2007 CAS server when making WebDav requests.

EnterpriseVault_WebDAVRequestHost

Value set to "localhost" at installation.

If the setting is not specified, then the name of the Mailbox server for the mailbox being accessed is used.

The target server for WebDav requests.

If the setting is not specified (that is, the name of the Mailbox server for the mailbox is used), then either the protocol must be set to http, or a certificate must be installed on each Mailbox server.

EnterpriseVault_WebDAVRequestVirtualDirectory

exchange

The virtual directory used by the Exchange 2007 CAS server when making WebDav requests.

To connect to remote Exchange 2007 Mailbox servers using HTTPS

  1. Open the web.config file (Exchange installation path\ClientAccess\Owa\Web.Config) in a text editor.

  2. Delete or comment out the following entry:

    <add key="EnterpriseVault_WebDAVRequestHost" value="localhost"/>

  3. Save and close the file.

  4. Install a certificate for IIS on each of the remote Exchange 2007 Mailbox servers.

To connect to remote Exchange 2007 Mailbox servers using HTTP

  1. Open the web.config file (Exchange installation path\ClientAccess\Owa\Web.Config) in a text editor.

  2. Delete or comment out the following entry:

    <add key="EnterpriseVault_WebDAVRequestHost" value="localhost"/>

  3. Add the following entry:

    <add key="EnterpriseVault_WebDAVRequestProtocol" value="http"/>

  4. Save and close the file.

    You do not need to install a certificate for IIS on the remote Exchange 2007 Mailbox servers.