View raw MIME of messages in Outlook 2003

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If you use Outlook 2003 with a POP or IMAP account,
you can tell Outlook to store the entire MIME source of the item when downloading.
The MIME can then be viewed via the View | Options menu on the item (the full
MIME will be located in the "Internet Headers" field).

To enable this feature, set the following registry
parameter:

HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail

Parameter: SaveAllMIMENotJustHeaders

Type: REG_DWORD

Data Value: 0x00000001