How to Enable or Disable MAPI for a Mailbox User

Microsoft Exchange Server 2007 will reach end of support on April 11, 2017. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.


Applies to: Exchange Server 2007, Exchange Server 2007 SP1, Exchange Server 2007 SP2, Exchange Server 2007 SP3

Topic Last Modified: 2006-12-20

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to enable or disable Messaging Application Programming Interface (MAPI) for a Microsoft Exchange Server 2007 mailbox user.

To perform this procedure, the account you use must be delegated the following:

  • Exchange Recipient Administrator role

For more information about permissions, delegating roles, and the rights that are required to administer Exchange Server 2007, see Permission Considerations.

  1. Start the Exchange Management Console.

  2. In the console tree, expand Recipient Configuration, and then click Mailbox.

  3. In the result pane, select the mailbox user for whom you want to enable or disable MAPI.

  4. In the action pane, under the mailbox user's name, click Properties.

  5. In <Mailbox User> Properties, on the Mailbox Features tab, click MAPI, and then click either Enable or Disable.

  6. Click OK.

  • Run the following command to enable MAPI for the user John:

    Set-CASMailbox -Identity John -MAPIEnabled $true
  • Run the following command to disable MAPI for the user John:

    Set-CASMailbox -Identity John -MAPIEnabled $false

For detailed syntax and parameter information, see the Set-CASMailbox reference topic.

For more information about the Exchange Management Shell, see Using the Exchange Management Shell.