In another post it was established that email which is forwarded to another box does not get spam filtered.
There are times when filtering before forwarding would be desirable and I have found the answer. :o)
If emails are forwarded using the VM interface of the server, forwarded emails are not filtered.
However, if the forwarding is set up using the users Usermin login, forwarded email IS filtered.
Makes me one happy bunny ! :o)
Hope that is useful to someone else, it would be a nice change for me to put something back into the community.