My Classic ASP site takes orders through PayPal, but PayPal keeps emailing me an “IPN is failing due to a server issue” error message. I need you to trace exactly why the IPN call is breaking, correct the code or server settings causing the failure, and confirm that PayPal’s test and live IPN posts are received, logged, and processed as expected. Classic ASP. PayPal IPN, and basic IIS diagnostics are the core skills for this task. Relatedly, the web site is down due to a server / ODBC error message. I am confident that these two things are related.