• You must configure Microsoft® Exchange 2007 to support versions of Microsoft® Outlook® earlier than 2007 by creating the public folder database. For more information about supporting earlier versions of Microsoft Outlook, visit http://support.microsoft.com to read article 555851 and visit http://technet.microsoft.com to read articles 123694, 124270, 397221, and 691120.
• You must be an administrator with permission to create accounts.

1. On the computer that hosts Microsoft Exchange, log in using an administrator account that has the correct permission to create accounts.
2. Open the Microsoft Exchange Management Console.
3. Create a Microsoft Exchange account that you name BESAdmin.
4. To allow the BlackBerry Enterprise Server to check if a user has permissions to a public folder, assign this account the Owner permission to all public folders.

• Verify that users have Read and Visible permissions to public folders.
• To permit checks for meeting invitee availability for BlackBerry® Device Software version 4.5 or later, configure the Schedule+ free and busy information for the system public folder. For more information, visit http://technet.microsoft.com to read articles 629523 and 691129.

Without the correct permissions, the BlackBerry Enterprise Server cannot run.

1. Right-click My Computer. Click Manage.
2. In the left pane, expand Local Users and Groups.
3. Navigate to the Groups folder.
4. In the right pane, double-click Administrators.
5. Click Add.
6. In the Enter the object names to select field, type the account name that you want the services for the BlackBerry Enterprise Server to use (for example, BESAdmin).
7. Click OK.
8. Click Apply.
9. Click OK.

1. On a computer that hosts the Microsoft® Exchange Management Shell, open the Microsoft Exchange Management Shell.
2. Perform one of the following actions:
   • If you want to execute the command on the Microsoft Exchange 2007 server, type add-exchangeadministrator "BESAdmin" –role ViewOnlyAdmin.
   • If you want to execute the command from another computer, type get-mailboxserver "<messaging_server_name>" | add-exchangeadministrator "BESAdmin" –role ViewOnlyAdmin.
3. Type the following command: get-mailboxserver "<messaging_server_name>" | add-adpermission –user "BESAdmin" –accessrights ExtendedRight –extendedrights Send-As, Receive-As, ms-Exch-Store-Admin.

1. On any computer in the Windows® domain, on the taskbar, click Start > Administrative Tools > Active Directory Users and Computers.
2. On the View menu, click Advanced Features.
3. Right-click the domain root. Click Properties.
4. On the Security tab, click Advanced.
5. Click Add.
6. Type the name of the Microsoft® Exchange account that you created (for example, BESAdmin).
7. Click Check Names.
8. Click OK.
9. In the Apply drop-down list, click User Objects.
10. In the Allow column, select the Send As check box.
11. Click Apply.
12. Click OK.