Given that E-Check is one of the methods that customers can pay using PayPal, it is advisable to set up the Instant Payment Notification (IPN) on PayPal's system. Merchants that have chosen Website Payments Standard must configure this setting also.
After logging into PayPal, click the Profile (sub) tab . and in the Profile Summary screen, click as shown below.
Click on My Selling Tools located on the left hand side of the screen as shown below.
Now click Update for the Instant Payment Notification Preferences linksection as shown below. Anchor
Next, in the preferences page that appears, check the box that turns IPN "ON". Also enter +http
Click the "Choose IPN Settings" button as shown below.
Finally enter the URL https://secure.ultracart.com/cgi-bin/UCPayPalNotify+ into the URL box provided. Then click on the "Save" button. Anchor
Your newly configured IPN status will be shown in the IPN status screen. It is very important to insure that you have entered the correct URL. You can click the "Edit" button to make changes.