whitelists and blacklists question

[Andrew <an...@arda.homeunix.net>]

I currently have SA running in a site-wide configuration using 
spamc/spamd. I would like to implement whitelists/blacklists on a per 
account basis. I use qmail and maildrop, so for per account processing, 
I plan to invoke SA from a .mailfilter file and keep user prefs in a SQL 
database.

My question is, can I invoke SA to check user whitelists/blacklists only 
without it running any rule tests? Email will already contain SA headers 
from the site-wide SA installation. I want to use per account 
whitelists/blacklists as a possible override to whatever verdict the 
site-wide SA gives an email.