Yahoo SMTP

[Travis]

Can someone give me an example of connecting to yahoo's smtp server 
and sending mail?
I'm doing this:
msg = MIMEText(self.text_ctrl_1.GetValue())
        msg['Subject'] = sub
        msg['From'] = 'bossierbossman at yahoo.com'
        msg['To'] = to
        s = smtplib.SMTP('smtp.mail.yahoo.com')
        s.set_debuglevel(1)
        s.connect()
        s.login('bossierbossman', 'mypassword')
        s.sendmail('bossierbossman at yahoo.com', [to], msg)
        s.quit()
which isn't working out for me.  Any thoughts?