I have two questions regarding the forwarding capabilities of Zimbra.
We're installing a NE multi server setup and one of the legal concerns is that we need some proof emails actually got delivered. It has been admitted that "mail sitting in inbox" == "mail delivered"

Now, we're hitting a delicate point:
Is it possible to disable either the option "no local delivery" or in a worst case scenario, forwarding to external addresses all together for all new addresses? All of this in a way that won't allow any user to re enable it (aside from maybe admins, but we want a solution that would survive upgrades).

Second point:
If we set up archiving, would the forwarded mails be archived anyway? If so that might solve the problem just as well.