I don't think there is anything you can do in Outlook Express to force
use of BCC.

Potentially something could be done on the SMTP mail server assuming
that is under your control. It could look at the TO and CC headers and
if they contained more than a given number of entries, it could reject
the message and that would give an error back to the sender and leave
the message in the Outbox folder.

--

Mike - http://pages.prodigy.net/michael_santovec/techhelp.htm



"Ambi" wrote in message
...
To prevent emails going out with mass to or cc, exposing email
addresses to
each other. Instead direct to use 'BCC'. I know this could be
prevented by
educating the users but is there a policy or addon that could be
installed on
outlook and outlook express clients to block such emails totally?