On Sat, 2005-06-25 at 22:25 +0100, Mark Smith wrote:
> > You could try something like this:
> > 
> >   deny
> >     authenticated = *
> >     !senders = $authenticated_id
> >     message = Aliases not allowed
> > 
> > However, a problem with Outlook is that when it receives a 
> > "deny", instead of reporting the error message from the MTA 
> > it just tries to send the email again from any other accounts 
> > it can find, until it succeeds in sending the email. If 
> > anyone knows how to stop it doing that, I'd appreciate 
> > hearing the solution.
> > 
> 
> Just realized that if you put the test in the MAIL_FROM ACL, rather than
> RCPT, Outlook reports the error properly and gives up.

Combine that acl with a policy (which is backed up) that attempts to
change the sending address will result in loss of computer access /
being kicked off the network / dismissal (assuming this is a work place)
and you're onto a winner.  Technical solutions are only ever a partial
solution as the really determined moron will always find a way to work
round them.

-- 
Mark <[EMAIL PROTECTED]>


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