Yes, "false-positives" can be sent to the Postini Administrator and then forwarded to other users.  You may login to the Postini portal as a System Admin and select the user who has received the "false positive." Scroll down and select "Quarantine" under Settings. This will show you the administrative view of that user's quarantine. You may select the false-positive quarantined message, then select "Deliver to administrator."  Click "Process," and the message will be delivered to the inbox of the admin that is logged in. Once the message is received by the administrator, he/she can forward it to multiple users as needed.