Oh.. I got few .. trust me .There are no silly questions, Supe; only silly answers .
My fresh install boxes are the same, amazing.. isn't it? ) (well. with the exception that I've used spamblocker 2 - till now).When I install a new box I install ClamAV following the instructions here and then I install the appropriate version of SpamBlocker3 and of course the required exim.pl, from my site here.
I edit the SpamBlocker3 file to show (in the event of a false positive) the link to your own page instead of example.com, and since I run ClamAV I add that extra file (see #3 below).
OK,.. that is the only thing I'm concerned about....and of course the required exim.pl, from my site