I have BM3.8 on NW6.5 running as a proxy server. Everything works fine. But
now I try to route all outgoing mail traffic to a server in the internet
(for scannig all outgoing mails).
I found nothing in proxy.cfg to force the mail proxy to route all outgoing
e-mails to a dedicated address.
Is this possible at all? For incoming mails this works fine.

Or can I use a transparent proxy on port 25 for that pointing my internal
mail-server to the server in the internet?

Thanks for helping me.