when you send a draft in exchange 2010 it is stored in the sent items folder - as expected. - but additionally the draft is stored as deleted item in the dumpster of that mailbox.
we could find this behaviour in 2 different exchange 2010 server systems and suppose that it is by design of exchange 2010.
anybody out there who could confirm that this behaviour is by design of exchange 2010? - any references of microsoft to confirm this would be highly welcomed.