Blacklisting with MySQL backend

[twallrafen]

Hi *!

Is it possible in Plesk 7.5 reloaded to use a MySQL table as backend for Spamassassin 's Black-/Whitelisting features?
If so, is ist possible to define this whitelisting-Table on a per user basis?
How much do I have to configure manually?

Any help and suggestions appeciated.

Bye

Thomas