title: Why emails are not sending on production server?
body: <p>I'm using the grails plugin "mail=0.9". Emails are not sending on production server. It just works fine on development environment on localhost.</p>
  
  <p>Error is given below;</p>
  
  <pre><code>Stacktrace follows: 
  javax.mail.AuthenticationFailedException
          at javax.mail.Service.connect(Service.java:319)
          at org.grails.mail.MailService.sendMail(MailService.groovy:63)
          at org.grails.mail.MailService.sendMail(MailService.groovy:46)
          at org.grails.mail.MailService$sendMail.call(Unknown Source)
          at MailGrailsPlugin$_configureSendMail_closure4.doCall(MailGrailsPlugin.groovy:86)
          at com.tkxel.chefvivant.api.SommelierController$_closure4.doCall(SommelierController.groovy:107)
          at com.tkxel.chefvivant.api.SommelierController$_closure4.doCall(SommelierController.groovy)
          at java.lang.Thread.run(Thread.java:636)
  </code></pre>
  
  <p>Can anyone help me? Why emails are not sending?</p>
  
  <p>Thanks</p>