Working with Attachments
Outlook 2002 is ruthless with file attachments. With some file types, in fact, it simply refuses to allow you to access attachments at all. This is not a bug; it's a controversial security feature designed to protect users from possibly dangerous attachments.
Every time you receive an e-mail message with an attached file, Outlook 2002 checks the file extension for that attachment, using a list of extensions stored in the Registry. If the extension is on that list, Outlook may force you to save the file before opening it, or it may forbid you to access the attachment in any way.
The attachment security list divides potentially dangerous files into two levels. So-called Level 1 files—executable files, shortcuts, scripts, ...
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