> I tried to adopt smtp dsn like dokumented here:
> http://www.postfix.org/postconf.5.html#default_delivery_status_filter >
> Since the example is exactly what I want (so my users get Non delivery
> notifications for domains where we refuse to send without transport
> encryption but won't offer it earlier) I just c&p'd.
> However - it does not seem to do anything. Any mail sent to such a
> destination still gets a 4.. status.
> Any help debugging whats going on would be appreciated.