We are receiving this error message email from Paypal:
"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 account."
Our shop is running on Magento 1 and it looks like all Paypal info are imported and exported correctly from our store. We run multiple stores on the same Magento installation and on the same Paypal account. Any help would be appreciated, thanks