Verification Call to "http://bit.ly/11H4Jer" URL is necessary?

Since we already do the verification with google at the browser when user click on the reCaptcha check-box, Is it really necessary to call the verification URL ("http://bit.ly/11H4Jer") with secret key to verify again at server side?  If necessary, kindly someone help me with the solution for this scenario. The verification happens at above google url, that is, we need to connect to internet from our backend(application) server in order to get it verified. But usually application server at production environment is not allowed to connect to public(internet) sites from program. Is there an alternate to do this verification process from browser client code itself?  Using Struts1.1 framework.  Appreciate your help.  -- 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.