JavaMail SSL with no Authentication trust certificate regardless

I have a local mail server (hMailServer) with SSL (port 465) and a self-signed certificate. Domain is "foobar.com" I have setup my `Properties` to enable ssl, disable auth, and trust any host ``` props.put("mail.smtp.auth", "false"); props.put("mail.smtp.ssl.enable", "true"); props.put("mail.smtp.ssl.trust", "*"); ``` If I send the message through the static call to `Transport.send()` The email gets delivered. If I try to get a `transport` instance from the session then I get ``` 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 ``` How does the static call avoids the SSLHandshakeException? Here's my tester code: ``` public static void main(String[] args) throws Exception { Properties props = new Properties(); props.put("mail.smtp.host", "127.0.0.1"); props.put("mail.debug", "false"); props.put("mail.smtp.port", "465"); props.put("mail.smtp.timeout", "60000"); props.put("mail.smtp.auth", "false"); props.put("mail.smtp.sendpartial", "true"); props.put("mail.smtp.ssl.enable", "true"); props.put("mail.smtp.ssl.trust", "*"); Session session = Session.getInstance(props); Message message = new MimeMessage(session); message.setFrom(new InternetAddress("mrFoo@foobar.com")); message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("you@foobar.com")); message.setSubject("Just a Test " + new Date()); message.setText("Hello World"); //Comment and uncomment to test Transport.send(message, message.getAllRecipients()); //Transport t = session.getTransport("smtps"); //t.connect(); //t.sendMessage(message, message.getAllRecipients()); //t.close(); } ``` This is a local system hidden from the outside, so I am not worried about man in the middle attack generating their own certificates to bypass the SSL Handshake...