Hello I am having trouble getting the post from Paypal to add a database record. I can get the post to work fine when done from my site but it won't work from Paypal. Return URL Method POST

Hello

I am having trouble getting the post from Paypal to add a database record. I can get the post to work fine when done from my site but it won't work from Paypal.

Return URL Method POST

Silent Post URL enabled

Force Silent Post Confirmation is ON

I have tried adding :443 to the URL since it is posting back to a secured page. It doesn't work either way.

I get this error: "Your transaction was approved! However, a communication error with the merchant's site occured.

The transaction has been voided, please contact the merchant."

The FMP error message is a generic "unknown error"

Any ideas?

Thanks

Greg