Blacklisting our domain

My boss just informed me that our domain is being blacklisted by reCaptcha. Should this be happening?Could there be something in our configuration that is making our websites IP's get declined by the service?Thank you for 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/1gYXIc9.