On Wed, 2004-09-15 at 09:37 +0200, Thomas Hochstein wrote:
> David Woodhouse schrieb:
>
> >> has anyone an idea, how can i add an (static) signature to all outgoing mail
> >> from any (smtp-)users by an exim server?
> >
> > What kind of signature are you after?
>
> Probably something like "This email is confidential and intended
> solely for the use of the individual to whom it is addressed. [...]".
These signatures are completely pointless - both in general and in a
legal sense (other than very limited application around financial
dealers).
Modifying a message in transit may also make you liable for the content.
In this case combined with (say) a virus infected machine on your
internal network mailing out, things could get very bad.
Modifying a message will break any digital signatures, and has to be
done extremely carefully so as to not make the message completely
useless.
You could do this by using a transport filter on on the appropriate
transport. The filter would need to take a message on stdin, massage
it, and spit out the result on stdout. However I must stress that doing
such a thing is just plain stupid.
Nigel.
--
[ Nigel Metheringham Nigel.Metheringham@??? ]
[ - Comments in this message are my own and not ITO opinion/policy - ]
