I am getting the following message from paypal regarding my membership website. Any ideas? Thank you in advance
Please check your server that handles PayPal Instant Payment Notifications
(IPN). IPNs sent to the following URL(s) are failing:
If you do not recognize this URL, you may be using a service provider that
is using IPN on your behalf. Please contact your service provider with the
above information. If this problem continues, IPNs may be disabled for your
Thank you for your prompt attention to this issue.