play.mailer {
  host=smtp.gmail.com
  port=465
  ssl=true
  tls=false
  user=example-user
  password=*****
  debug=false
  mock=false
}

play.mailer {
  host=example.org /*i tried smtp.example.org also */
  port=465
  ssl=false
  tls=false
  user= campus
  password=*****
  debug=true
  mock=false
}

Execution exception
[EmailException: Sending the email to the following server failed : example.org:465]