[exim] Exim Filter Issues.

Hey-

I'm running into some issues with the Exim Filter. It seems to find the files
without issue but when it tries to load(run) than it outputs: "error=filtering
not enabled userforward router: defer" and also "message: error in filter file:
filtering not enabled".

Here is the portion from my Exim config file:

userforward:
driver = redirect
file = /mail/${domain}/mail/${local_part}/.forward
check_local_user = false
user = exim
group = exim
no_verify
no_expn
check_ancestor
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply


Here's what I get when I do a -d -bt on the email address:

--------> userforward router <--------
local_part=webmaster domain=lordofgames.com
calling userforward router
rda_interpret (file): /mail/${domain}/mail/${local_part}/.forward
expanded: /mail/lordofgames.com/mail/webmaster/.forward
changed uid/gid: userforward router (recipient is webmaster@???)
uid=511 gid=511 pid=10796
auxiliary group list: <none>
79 bytes read from /mail/lordofgames.com/mail/webmaster/.forward
rda_interpret: subprocess yield=8 error=filtering not enabled
userforward router: defer for webmaster@???
message: error in filter file: filtering not enabled
webmaster@??? cannot be resolved at this time:
error in filter file: filtering not enabled
search_tidyup called


Can anyone shed some light on what I'm doing wrong? Wrong permissions maybe?

Thanks!
Tom