I'm trying to set up a (recurring payment) test environment. It is a simple form with 3 fields (name+email).
I have created a paypal sandbox, created buyer and seller accounts. Logged in as the seller, I have set the IPN to point back to my site.
In GF I have set it in test mode, set the PP email address to be the seller's.
I then visit the form, which takes me to PP, where I pay and confirm using the buyer's details. However, PP redirects me back to a different domain. The domain is hosted on the same IP address.
Can anyone tell me where I need to look to fix this?