CiviCRM Community Forums (archive)

We have contribute set up and seemingly working ok using Paypal standard without ssl but we're getting regular 'error' emails from paypal with the following message:

Please check your server that handles PayPal Instant Payment Notifications (IPN). Instant Payment Notifications sent to the following URL(s) are failing:

http://www.sitename.com/sites/all/modules/civicrm/extern/ipn.php?reset=1&contactID=10000&contributionID=100&module=contribute&membershipID=166&contributionRecurID=26&contributionPageID=2

All these seem to relate to recurring payments (non recurring payments are not giving an error) - the payments do seem to have been created succesfully.

If I try and visit the url sent in the email I then get a 'Failure: Missing Parameter' error and a corresponding 'Could not find an entry for invoice in POST' error in the CiviCRM.log file.

I've seen a similar post in the forums but in that case the payments were remaining in the pending state.  Has anyone experienced these errors before?

Thanks