reCAPTCHA verification will not fail script to stop email action

Our issue is that an email is generated regardless if the captcha is verified or not. Any ideas why this will not fail if the captcha isn't verify and the box checked to say "I'm not a robot?" Here is a sample of the form we have tested:

     

             Name
                  

     

             Email address
                  

     

             Enter Contract Here
                  

     

     

Here is the PHP script that generates the email: -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.