A client of mine has a webhook set up for Global Payments to use, but they keep getting 503 responses from it. The page works fine for me via my browser and also when I POST to it via Postman.
Global Payments have confirmed that they get ‘cloudflare’ in the response, and the results of cdn-cgi/trace are:
uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36
I’ve created a firewall rule for the webhook URL so that the security level, integrity check etc doesn’t apply to it, and I have Bot Fight Mode on. The firewall rule hasn’t been triggered once so it looks like they aren’t even getting that far.
If you have any ideas, I’d appreciate them.