When you send an e-mail message from a shared mailbox in Outlook 2007, the sent message is not saved in the Sent Items folder of the shared mailbox

Consider the following scenario:

• You configure the DelegateSentItemsStyle registry entry for Microsoft Office Outlook 2007.
  
  To do this, you set the DWORD value of the following registry key to 1:
  HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Preferences\DelegateSentItemsStyle
• You open a shared mailbox as an additional mailbox in Outlook 2007.

In this scenario, when you send an e-mail message from the shared mailbox, the message is sent successfully. However, the sent message is not saved in the Sent Items folder of the shared mailbox.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: To resolve this problem, install the Outlook 2007 hotfix package that is dated June 30, 2009 and then set the value for the DelegateSentItemsStyle registry entry to enable the hotfix package. To do this, follow these steps:

1. Install the Outlook 2007 hotfix package that is dated June 30, 2009. For more information about this hotfix package, click the following article number to view the article in the Microsoft Knowledge Base:
   970944  (http://support.microsoft.com/kb/970944/ ) Description of the Outlook 2007 hotfix package (Outlook.msp): June 30, 2009
2. Set the value for the DelegateSentItemsStyle registry entry to enable the hotfix. To do this, follow these steps:
   1. Click Start, click Run, type regedit, and then click OK.
   2. Locate and then click the following registry subkey:
      HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Preferences
   3. On the Edit menu, point to New, and then click DWORD Value.
   4. Type DelegateSentItemsStyle, and then press ENTER.
   5. Right-click DelegateSentItemsStyle, and then click Modify.
   6. In the Value data box, type 1, and then click OK.
   7. Exit Registry Editor.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.