Can I create a Transport rule with condition of "If recipient address (support@contoso.com) is bcc, then silently discard" ?

I need to create a rule that will take any email that was sent to recipient support@contoso.com as a Blind Carbon Copy recipient, and silently discard it.  We should never receive mail from the outside from senders that bcc our support email address. It is always spam and can easily be filtered, but from what I read, Exchange 2013 doesn't come with the ability to use bcc recipient to create a condition with.  I read there may be some 3rd party solutions, but I can't find any.  Please suggest the best solution to this trivial non-feature of Exchange 2013 that should come included out of the box.

Thanks,

Keith