[exim] Exim-SpamAssassin with Virtual Users

Hey all-

I posted this in the Spam Assassin List but haven't had any luck. I'm
guessing my problem has something to do with the Exim config so I'm
going to try here. I'm running Exim 4.60 and SA 3.1.1

--- Original Post ---

I just installed Spam Assassin and I'm running into a small problem. I'm
running a mail server with Exim 4.60 and it's hosting virtual accounts.
So the setup is basically /mail/domain.com/mail/user/inbox what I would
like to do is give each user control over their SA settings so I've
tried two different ways to make SA work the way I wanted.

I've copied the user_prefs template over to the following:

1) /mail/domain.com/mail/.spamassassin/user.cf
2) /mail/domain.com/mail/.spamassasin/${local_part}/user_prefs

Option 2 is what's setup below:

I have the following Router in my Exim config:

# SpamAssassin
spamcheck_router:
no_verify
#check_local_user
# When to scan a message :
# - it isn't already flagged as spam
# - it isn't already scanned
condition = "${if and { {!def:h_X-Spam-Flag:} {!eq
{$received_protocol}{spam-scanned}}} {1}{0}}"
require_files =
/mail/${domain}/mail/.spamassassin/${local_part}/user_prefs
driver = accept
transport = spamcheck

With this Transport:

spamcheck:
driver = pipe
command = /usr/local/exim/bin/exim -oMr spam-scanned -bS
use_bsmtp = true
transport_filter = /usr/bin/spamc
home_directory = "/tmp"
current_directory = "/tmp"
# must use a privileged user to set $received_protocol on the way
back in!
user = exim
group = exim
log_output = true
return_fail_output = true
return_path_add = false
message_prefix =
message_suffix =

Now I only have one account under one of the domains setup with with a
user_prefs and/or a user.cf file. SA is scanning for SPAM on that
account so I'm assuming that the require_files command in the Router is
working, because other accounts under that domain are not scanning SPAM
nor are any other domains/accounts on the server. However, it will only
read the /etc/mail/spamassassin/local.cf file and is ignoring the lower
score setting I have in my user_prefs file.

My question is, how do I get SA to read from the user_prefs file under
the virtual email user accounts? Anyone done this before? I'm kinda new
to SA and I'm still getting the hang of customizing it.

Thanks!