I should add that EMAIL_TEST_SUBJECT and EMAIL_TEST_BODY are defined in a properties file and contains non utf8 characters. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4035735#4035735 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4035735