====== TOMCAT ======


  <Resource name="mail/MyMailServerName"
   auth="Container"
   type="javax.mail.Session"
   mail.transport.protocol="smtp"
   mail.smtp.host="smtp.gmail.com"
   mail.smtp.port="465"
   mail.smtp.auth="true"
   mail.smtp.user="myusername@gmail.com"
   password="mypassword"
   mail.smtp.starttls.enable="true"
   mail.smtp.socketFactory.class="javax.net.ssl.SSLSocketFactory"
  />

====== JBOSS - \server\default\deploy\mail-service.xml ======

  <mbean code="org.jboss.mail.MailService" name="jboss:service=GMail">  
     <attribute name="JNDIName">java:/GMail</attribute>  
   
     <!-- Replace "someuser@gmail.com" in the next line with your GMail address -->  
     <attribute name="User">someuser@gmail.com</attribute>  
   
     <!-- Replace "SecretPasswordGoesHere" in the next line with your GMail password -->  
     <attribute name="Password">SecretPasswordGoesHere</attribute>  
   
     <attribute name="Configuration">  
       <configuration>  
         <property name="mail.transport.protocol" value="smtp"/>  
         <property name="mail.smtp.host" value="smtp.gmail.com"/>  
         <property name="mail.smtp.port" value="587"/>  
         <property name="mail.smtp.auth" value="true"/>  
       </configuration>  
     </attribute>  
     <depends>jboss:service=Naming</depends>  
   </mbean>