I know that this is way too long as it is, but in going through my folders I found a folder where I was keeping example code found out in cyberland and I wanted to share part of the code that seems to make it into a lot of example Gmail code out there. This shows where people are populating configuration properties for which there are no reasons. If the protocol is specified properly, all of the things listed here are unnecessary.
Properties props = new Properties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.host", "smtp.gmail.com");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
props.put("mail.smtp.quitwait", "false");
Session session = Session.getDefaultInstance(props, null);