View the message source in Outlook 2003
Viewing email source is often useful in identifying spam, checking mail headers, etc.
Outlook doesn't have a "View Source" option like Outlook Express. It has a "View > Options" menu that only shows the message header only in a smallish text box, and it does not include the full message source.
You can view the message source in Outlook 2003 by creating a new registry key. If you access the mailbox using an Internet transport, you'll see the full source. Here are the simple steps to enable this:
1. Open the registry editor (Start > Run > type: regedit)
2. Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail
3. Right click on the right pane, create a new DWORD: SaveAllMIMENotJustHeaders and assign it value of 1
Note: This only works on new mail received after the registry key is created.