[Exim] Filters

Hello,

I've done a system filter on the emails.
In the Main Configuration section, I put:

# System filter
message_filter = /etc/system_filter
message_filter_file_transport = transport_filter

And in the director section, I put:

transport_filter:
driver = forwardfile
file = /etc/system_filter
file_transport = address_file
no_verify
no_check_local_user
filter
user = nobody

The filter works fine (the routines I have put in the file /etc/system_filter work), though in the logs I find messages saying that there is no transport.
Note that I've put the transport_filter in the director section because the driver forwardfile is not accepted in the transport section.

Anybody has got any suggestion?
cheers
Guillaume