Is the email address associated with your VA domain or elsewhere (Gmail, Hotmail, etc.)?
If you have an email address entered in as the 'admin' email, you don't really need any of the entries you changed/added above. It should just work.
There are issues sometimes with the email host in that mass emails may be blocked. Many times, you can check in cPanel to see if the emails are going out or bouncing back to your host.