JavaMail with MS Exchange: No authentication mechansims supported by both server and client

Question

I\'ve been trying for days now to send mail from Grails application and unsuccessfully. I\'m using:

• grails 1.3.7
• mail 1.0 plugin
• spring-secur

Answer 1

If you're trying to connect to your mail server without authentication, call the connect method that doesn't take a username and password. If you pass it a username and password, it thinks you really want to authenticate, and since it can't find an authentication mechanism that the server supports, it fails.