[dspam-users] can opt-in/opt-out be put into the user prefs?

I've been playing around with dspam personally for a while now, but now
my company is actually having me look into getting a setup for our
~100,000 users. Having to deal with files for opt-in/opt-out
(particularly a file per possible address) is a real downer... can the
opt-in/opt-out setting be put into the SQL user preferences?

Along those same lines, how can I minimize the amount of filesystem
interaction dspam does? We won't be using the quarantine or CGI or
anything, all I really need dspam to do is process messages.

-- 
Justin McAleer
Application Developer
Neonova Network Services