[horde] Kolab spamassassin

[Shawn]

Hi all.

This is my first post to the list, so I apologize if my question isn't quite 
on topic...

I'm using Kolab for my email server, and currently just accessing it through 
IMAP (not full Kolab integration, yet).  I've set up Horde on a separate 
server, and it's working more or less fine.

Now, when I had horde set up on the same server, I was able to utilize Kolab's 
Spamassassin (via IMPs Message and Spam configuration page).  But this 
doesn't seem possible if Horde is set up on a separate server.  So, I'm 
looking for suggestions on how I can make this happen.

A couple of thoughts were to bounce mail to a specific email address and treat 
everything at that address as spam.  But I don't really see a simple way to 
do this, though the page hints at it.  Or, maybe set up NFS and mount the 
Kolab partition on the web server, then use it that way?  This seems very 
overkill and possibly insecure to me though...  

Does anyone else have this configuration and found a way to use Kolab's 
spamassassin?  If so, how?

Thanks in advance.

Shawn