Env: CentOS7.2, running PHP7.2 under Apache 2.4 I've thrown every test I can at my IPN integration and all my tests come back positive. From a custom response via Insomnia (was Hurl.it) to the IPN Simulator, all return as expected. Yet, a valid payment doesn't appear to generate an IPN - having had tested multiple valid purchases and no hits to the IPN integration.
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