Cloudflare has detected that your configuration is using our Authenticated Origin Pulls feature. Recently, we renewed the certificate that our edge network presents to your origin due to the upcoming expiration of the current certificate on January 11, 2020.
To ensure uninterrupted service, you need to update your origin server to authenticate with the new authenticated origin pull certificate anytime before January 11, 2020.
You can find the updated certificate and follow the instructions for updating popular origin servers in this Cloudflare Help Center article: https://support.cloudflare.com/hc/en-us/articles/204899617/
Need help? Please contact us at https://support.cloudflare.com/
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The Cloudflare Team
用了这个设置后,影响我没有使用cf的Full (strict)功能的子域名,又去掉了
Full (strict)
Encrypts end-to-end, but requires a trusted CA or Cloudflare Origin CA certificate on the server