I set up a gmail account specifically for e-mail notices. Before I got mine to work, I noticed a lot of people where mentioning some odd bug.
Here's how I set mine up and it works great now:
Username: youracount@domain.com
password: youraccountpassword
SMTP Server: smtp.domain.com
Now both the Sender, and Receiver email I put as the same which was the e-mail address I wanted it SENT TO. I put the same address in both the sender, and receiver e-mail address.
Try that out - hopefully that works. Understand though, that a lot of 3rd party e-mail providers block external messages due to spam issues. so you'll probably have to check with your mail provider to ensure they'll allow sending messages from an external source.
Good Luck!