Issues with CCBill + Cloudflare + Webhook


My developers and I have been banging our heads for a while now. We use CCBill as a payment processor for our website, we’ve set it up just fine, customers can order, orders are saved in our database and so on.

However, we are unable to set up the Webhook to work for the sake of it. CCBill sends us a webhook notification but we do not receive it, after we disable cloudflare, it works. So that’s how we realized Cloudflare is the issue.

I’ve done this page rule as well:
I’ve whitelisted their IPs in host and cloudflare.

Nothing helps, CCBill tells me there’s a 503 response from us.

Anyone has any suggestions we’d be eternally grateful!

I don’t use CCBill, but there are several posts regarding the service:

Hey sdayman,

Thanks for replying. I sadly didn’t find a solution but you asked in one of the threads to see the code, so here I got this code for you maybe it helps you:

503 then this string

Error Content [ERROR: The requested URL could not be retrieved


The requested URL could not be retrieved

The following error was encountered while trying to retrieve the URL:

Failed to establish a secure connection to

The system returned: (71) Protocol error

This proxy and the remote host failed to negotiate a mutually acceptable security settings for handling your request. It is possible that the remote host does not support secure connections, or the proxy is not satisfied with the host security credentials.

Your cache administrator is root.

Generated Tue, 27 Aug 2019 17:47:39 GMT by nld-prod-proxy-01.nld1.ccbill.local (squid/3.1.23)