JavaMail SSL,无需认证信任证书

我有一个本地邮件服务器(hMailServer)与SSL(端口465)和自签名证书.

域名是"foobar.com"

我设置了我Properties的启用ssl,禁用auth,并信任任何主机

    props.put("mail.smtp.auth", "false");
    props.put("mail.smtp.ssl.enable", "true");
    props.put("mail.smtp.ssl.trust", "*");

如果我通过静态呼叫发送消息,则Transport.send() 电子邮件将被发送.

如果我尝试transport从会话中获取实例,那么我得到

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

静态调用如何避免SSLHandshakeException？

这是我的测试人员代码:

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();
}

这是一个隐藏在外面的本地系统,所以我不担心中间人攻击生成自己的证书绕过SSL握手......