For a successful build, you must get the following jars from java.sun.com and copy them into ${libdir}: activation.jar, Version 1.0.2 as activation-1.0.2.jar mail.jar, Version 1.3 as javamail-1.3.jar jdbc.jar, Version 2.0 as jdbc-2.0.jar jndi.jar, Version 1.2.1 as jndi-1.2.1.jar One of these jars is missing. Please correct this error and rebuild.