I know this is probably a WooCom issue, but just thought I’d check here too to see if anyone has had this issue?? The WooCom System Status log shows that “wp_remote_post() was successful – PayPal IPN is working.” But I’m getting emails from Paypal telling me that its failing … and the link they provide in the email (www.mysite.com/?paypalListener=paypal_standard_IPN) gives this error page “PayPal IPN Request Failure” … Weird!!!
We can definitely leave this open and see if any other members of the commununity have advice they can offer up – however I would indeed see this as a WooCommerce issue and advise you make use of their support channels if you need further support on this one.