i was asked a question today about zimbra and spamassassin i couldn't answer,
maybe someone can help me:

Out of the box, zimbra moves spam into the user's junk folder.
Is there a way to collect all spam in one mailbox (or it's junk folder), so that one person is able to seperate between spam and ham there and do the training for the whole domain?
False-positives should be resend to the original users mailbox.

Thank you in advance.