python-ldap.org is not reachable - Cloudflare: CNAME Cross-User Banned

[stevepiercy]

Issue description:
https://www.python-ldap.org/en/latest/ is not reachable.

Error 1014 Ray ID: 43caf5c8ffdd8ce1 • 2018-07-19 05:59:06 UTC
CNAME Cross-User Banned
What happened?
You've requested a page on a website that is part of the Cloudflare network. The host is configured as a CNAME across accounts on Cloudflare, which is prohibited by security policy.

What can I do?
If you are interested in learning more about Cloudflare, please visit our website.

Cloudflare Ray ID: 43caf5c8ffdd8ce1 • Your IP: 2603:3004:212:2000:5b5:a5f9:f774:aec9 • Performance & security by Cloudflare

[encukou]

Hello, This came at quite a bad time: I'm on vacation, and I'm afraid still the single point of failure when it comes to the website :( I won't have acess to a computer until Friday. Please use python-ldap.readthedocs.io directly until then. Very sory for the inconvenience.

…

On Thu, Jul 19, 2018, 07:00 Steve Piercy ***@***.***> wrote: Issue description: https://www.python-ldap.org/en/latest/ is not reachable. Error 1014 Ray ID: 43caf5c8ffdd8ce1 • 2018-07-19 05:59:06 UTC CNAME Cross-User Banned What happened? You've requested a page on a website that is part of the Cloudflare network. The host is configured as a CNAME across accounts on Cloudflare, which is prohibited by security policy. What can I do? If you are interested in learning more about Cloudflare, please visit our website. Cloudflare Ray ID: 43caf5c8ffdd8ce1 • Your IP: 2603:3004:212:2000:5b5:a5f9:f774:aec9 • Performance & security by Cloudflare — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#232>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AASfStt71odbXF48Y8Vj3a89ADt8LWEaks5uICB-gaJpZM4VVy6B> .

[stevepiercy]

No worries. I noticed it only because I ran a linkcheck in Sphinx for the Pyramid Community Cookbook. Enjoy your vacation!

[encukou]

I've applied a temporary workaround I found at readthedocs/readthedocs.org#4395. It looks like the docs work now. I'll look into it more in a week, when I get back.

[encukou]

According to the discussion in readthedocs/readthedocs.org#4395, that workaround is good for the long term.

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The documentation is hosted on Read the Docs, which recently started to use the CloudFlare proxy for HTTPS support.
python-ldap.org previously used the same proxy independently. When Read the Docs switched to CloudFlare, that meant in CloudFlare started proxying to itself, causing this issue.
At the suggestion of one of the commenters, I turned one of the proxy layers off. A RTD contributor then verified this is a right solution.

python-ldap.org still uses CloudFlare for DNS (specifically, for CNAME flattening).

[stevepiercy]

Thanks for the follow up. I kept the original link and it's working fine.