Hi kcwebguy,
I wasn't able to resolve it and I have little confidence that the plugin author will make an update anytime soon. I moved my websites to a new server and configured it so that I could use PHP mail() again, instead of bothering with SMTP.
As an alternative - and this might be interesting for you - I did initially consider using Mandrill. You can sign up for a small amount of mails per month for free, and there is a good plugin available around here as well. https://wordpress.org/plugins/wpmandrill/
Good luck!