You'd have to use a Windows Rights Management or some similar content protection scheme.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"IH" wrote in message ...
It's not ‘forward by human interference’ I want to prevent, but computer
generated AUTO forward.

Reason (makes it easier to understand the question):
I am working at an office in China. All emails are, by rules in Outlook,
auto forwarded to an office manager. For a non-Chinese person this is a
violation of the privacy. It's an office policy so it's not for me to change.
However, I would like to be able to send emails that are not auto forwarded.