What is the name of the domain?
chuma.cc
What is the error number?
What is the error message?
Origin Unreachable
What is the issue you’re encountering
randomly got 523 error
What steps have you taken to resolve the issue?
1.stop fail2ban
2.clear all the banned ips
What feature, service or problem is this related to?
I don’t know
What are the steps to reproduce the issue?
We are currently using Cloudflare’s Free plan along with your SSL service for our website. Recently, we have been encountering the following issues:
Intermittent HTTP 523 errors appearing on certain pages.
When the homepage encounters a 523 error, other image resources also fail to load.
Interestingly, if we append a random query string (e.g., ?t=2) to the image URLs, they load successfully — which leads us to suspect a caching-related issue.
Here’s what we have attempted so far:
Cleared the cache
Verified our origin server is stable and SSL is correctly configured
Checked for potential blocks from firewalls or Fail2Ban against Cloudflare IPs
Despite these efforts, the root cause remains unclear. We would appreciate it if Cloudflare could help us:
Investigate whether any Cloudflare nodes or connections are experiencing issues
Confirm if any cache corruption or retrieval errors are occurring
Provide further troubleshooting suggestions
Thank you for your support. We’re happy to provide any additional information you may need.