AuthenticationError in reading mail using IMAP protocol using JavaMail - authentication

Question

I am trying to read emails from XXX domain using Java Mail API. I am able to login and read the email using IMAPS protocol using PUTTY from server.
However from Java, I am getting Authentication Error:
Following is the screenshot where I am able to connect from PUTTY:
Following is my Code:
Properties properties = new Properties();
properties.put("mail.imap.host", "hostname");
properties.put("mail.imap.port", "993");
Session session = Session.getDefaultInstance(properties, new javax.mail.Authenticator()
{
protected PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication("username", "password");
}
});
Store store = session.getStore("imaps");
store.connect("username", "password");
What does making it stop to read mail from Java ?
Internally, mail domain is using outlook exchange server.
Username being passed is full xxxx#domain.com.

Answer 1

You can remove the property settings; they have no effect since you're using imaps. And you can get rid of the Authenticator since you're passing the username and password explicitly.
You need to pass the host explicitly as well, otherwise it's connecting to localhost, which may be why it's failing. Look at the JavaMail debug output to see what it's actually doing. If that doesn't solve your problem, post the debug output.