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I am using PayPal sandbox with PayPal IPN. I am sending notifications to a blank page with HTTP 200 OK header sent in the PHP code.
While I should at least get that 200 back, I always get 503 (service unavailable) error. Is this a problem with the PayPal sandbox or something??
Could it also be a problem with security and like cross domains not allowed for whatever reason? Is there anything additional I have to do?
Refresh.
Many of my customers have this problem.
The IPN returns 503, however in script nothing was changed.
So it came out of nothing. Happening since last month or so?
It happens. Hit the "Login to Ask the community" button to create a question for the PayPal community.
