hi chris.kanu,
There were quite many changes in how the SMTP settings are handled in the latest TDP version. You might want to try the latest free beta version. Additionally you will have the option to specify whether to use the SSL or TLS secure authentication.
Or maybe first you might try to google that specific error message - usually it's a response from the SMTP server itself or, like in your case, a timeout - maybe port blocked within your secured network, or invalid login details etc.
Martin