If you use Outlook 2003 on Vista you may have noticed some messages have the header in the message body, often when you were BCC’d on the message. There is now a hotfix for this (and other issues) available from Microsoft.
For more information see:
Description of the Outlook 2003 hotfix package: April 22, 2008
If you don't have a support contract, you may need to open a support incident to get the hotfix, but you can try this method first: Call 1-800-936-4900 (press 3 for hotfixes) and tell them you're calling to obtain the hotfix described in KB [number].
If you correspond with Mac users and have issues with attachments, see
In Office Outlook 2003, you cannot open Macintosh binary attachments after you install security update MS08-15
Published May 13, 2008. Last updated on June 17, 2011.