I use a JBoss for queue. I have configured the SMTPAppender in "jboss-log4j.xml" in "C:\jboss-4.2.2.GA\server\default\conf". ( the add are hid) <appender name="SMTP" class="org.apache.log4j.net.SMTPAppender"> | <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/> | <param name="Threshold" value="ERROR"/> | <param name="To" value=&quot;XXX(a)YYY.com&quot;/&gt; | <param name="From" value=&quot;XXX(a)YYY.com&quot;/&gt; | <param name="Subject" value="JBoss Sever Errors"/> | <param name="SMTPHost" value="ZZZ.com"/> | <param name="BufferSize" value="10"/> | <layout class="org.apache.log4j.PatternLayout"> | <param name="ConversionPattern" value="[%d{ABSOLUTE},%c{1}] %m%n"/> | </layout> | </appender> The same settings I used for simple javaMail is working fine, but when I purposely let the JBoss hit error on my jar file, no mail sent. Any idea? where to check? And I also found the "org.jboss.mail.MailService" in jmx console cannot be configured anywhere, seems for free version. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4188966#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...