Hence why i asked if it was VOF. With VOF enabled you would have to either disabled at the policy level or disable all together at the services level to stop mails going to its quarantine.
There also maybe a viable reason why they not only want the mail in the quarantine but also sent to the intended recipient. If this is the case then adding an additional header to the mails would be what to do as part of your spam / av scanning, then apply a content filter based on the header and us the "duplicate and quarantine" action on the filter.
You obviously could use something other than a header like subject appending e.t.c..
