在不进行身份验证的情况下以javax.mail发送邮件

private void createSession() {    properties.put("mail.smtp.auth", "false");     //Put below to false, if no https is needed    properties.put("mail.smtp.starttls.enable", "true");    properties.put("mail.smtp.host", server);    properties.put("mail.smtp.port", port);    session = Session.getInstance(properties);}

我认为，就足够了。