1. Why does PlexSpamChecker creates data directory when I run my program?
   You need to specify runtime Java property as -Dmailicep.configFile=$PLEXSPAM_HOME/data/license.properties
2. How do I specify log file?
   You need to specify runtime Java property as -Dmailicep.logFileName=your filename path
3. How do I stop redirecting output messages to the log file
   You need to specify runtime Java property as mailicep.logRedirect=false
4. How do I use policies?
   PlexSpamCheck library uses three different policies for checking spam message. Since you are using POLICY_AGGRESSIVE, it's using a lot more real-time black lists. We suggest that you use CONSERVATIVE policy, because it will have a fewer false positives and will take less time.
5. Does isSpam method includes Razor or Bayesian check?
   Though, we have separate methods for checking only Razor database or Bayesian filter, but isSpam invokes these methods besides checking other real-time blacklists.
6. What are some ways to increase performance?
   You can specify runtime property -Dmailicep.host.owner.simple.check=true and increase number of threads for checking real-time blacklists as -Dmailicep.blackhole.pool.size=512. Also try increasing heap size of Java process by specifying -Mx=1024m.

If you have already installed Java and downloading PlexGiffer without VM, make sure that it is 1.4 or later. Otherwise download Java from http://java.sun.com/j2se freely.