secure tmp and spamassassin

[bonsaidouglas]

Email is still sending and receiving but the spamassassin tags in the headers aren't being added anymore. It happened around the time I secured my tmp directory with the following guide so I assume the issue is that spamassassin needs execute abilities on the tmp directory:
http://www.webhostgear.com/34.html

Are there any good techniques for securing the tmp directory and letting spamassassin run properly?