On one of the pages of my DNN website I've set up a BuyNow button inside a HTML/Text module. The button does a POST on submit to the PayPal Sandbox URL. I've also set up a REST based service which PayPal is going to post the IPN information to.
In this service I'm sending a POST with the cmd_notify parameter and get back the information associated to the transaction.
At this point I would like to check whether the receiver_email parameter which PayPal sends coincides with my seller email adress from inside the Sandbox account. However I don't want to hardcode the value for the latter. I've noticed that DNN has a "Payment Settings" section under Admin->Advanced Settings.
[TL;DR]
How can I programatically access the PayPal email address info stored at Admin->Advanced Settings->Payment Settings from back-end webservice C# code? Is this possible?