i tried this tutorial (http://czetsuya-tech.blogspot.de/2012/11/how-to-send-email-in-glassfish-using.html). I am using GlassFish 4 on Windows 7 Professional 64-bit.
Is this tutorial working because i got this exception:
javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465;
nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target