Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

Topic Last Modified: 2012-07-23

This topic explains how to use the EMC and the Shell to enable or disable use of Secure/Multipurpose Internet Mail Extensions (S/MIME) in Microsoft Office Outlook Web App. By default, S/MIME is enabled on the /owa virtual directory.

Looking for other management tasks related to security for Outlook Web App? Check out Managing Outlook Web App Security.

Use the EMC to enable or disable S/MIME in Outlook Web App

You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "Outlook Web App virtual directories" entry in the Client Access Permissions topic.

  1. In the console tree, navigate to Server Configuration > Client Access.

  2. At the top of the work pane, click the server that hosts the Outlook Web App virtual directory.

  3. In the work pane, select owa (Default Web Site), and then, in the action pane, click Properties.

  4. On the owa (Default Web Site) Properties page, click the Segmentation tab.

  5. In the Segmentation window, find the S/MIME feature.

  6. To enable or disable S/MIME, select S/MIME, and then click Enable or Disable.

  7. Click OK to save your change, and then close the properties window.

Use the Shell to enable or disable S/MIME in Outlook Web App

You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "Outlook Web App virtual directories" entry in the Client Access Permissions topic.

This example disables S/MIME on the Outlook Web App virtual directory named /owa in the default Internet Information Services (IIS) Web site on the local server.

Copy Code 
Set-OWAVirtualDirectory -identity "owa (Default Web Site)" -SMimeEnabled $false

This example enables S/MIME.

Copy Code 
Set-OWAVirtualDirectory -identity "owa (Default Web Site)" -SMimeEnabled $true

For information about syntax and parameters, see Set-OwaVirtualDirectory.

Note:
Availability of S/MIME in Outlook Web App can be controlled on a per-user basis by using the Set-CASMailbox cmdlet and the OWASMimeEnabled parameter.

Other Tasks

After you enable or disable S/MIME in Outlook Web App, you may also want to Manage S/MIME for Outlook Web App.