This article describes how to change the number of embedded MIME messages that Microsoft Office Outlook 2003 processes before the MIME is dumped to the message body. This functionality is added when you install Microsoft Office 2003 Service Pack 3 (SP3).

In Office 2003 SP3, a policy key was added. This policy key enables an administrator to change how many nested MIME messages are processed before the MIME is dumped to the message body.

By default, Office 2003 SP3 can process 50 nested attachments. If you use policies, and if you are an administrator, you can change this number.

To do this in the registry, follow these steps.

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

1.	Exit Outlook 2003.
2.	Start Registry Editor. To do this, use the method that is appropriate for the version of Windows that you are running: • In Windows Vista, click Start, type regedit in the Start Search box, and then press ENTER. If you are prompted for an administrator password or for a confirmation, type the password, or click Continue. • In Microsoft Windows XP, click Start, click Run, type regedit in the Open box, and then click OK.
3.	Locate and then click one of the following registry keys: HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Outlook\Options\Mail HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail
4.	After you select the key that is specified in step 3, point to New on the Edit menu, and then click DWORD Value.
5.	Type EmbeddedMessageLimit, and then press ENTER.
6.	Right-click EmbeddedMessageLimit, and then click Modify.
7.	In the Value data box, type a positive integer for the number of messages that you want to be processed before the MIME is dumped to the message body, and then click OK.
8.	On the File menu, click Exit to exit Registry Editor.

For more information about how to obtain the latest Office 2003 service pack, click the following article number to view the article in the Microsoft Knowledge Base: