title: should mail.jar and activation.jar go into CATALINA/lib?
body: <p>I have several apps which require email (smtp) but also want Tomcat's own ERROR messages to be emailed.  I've found this works only if I put mail.jar into $CATALINA_HOME/lib and remove it from all the webapps (~/WEB-INF/lib)</p>
  
  <p>First question: should activation.jar also go into Tomcat's lib folder? </p>
  
  <p>Second question is: What happens if an unmonitored app includes these jars in its own lib? (it seems this breaks the log4j emails for Tomcat.  I'm confused why Tomcat doesn't find and use the classses in its own lib rather than throwing a smtp mail provider exception (presumably due to the multiple occurances of the same mail.jar in the classpath).</p>