What is our cdn was unable to reach our servers?

When a CDN (Content Delivery Network) is unable to reach our servers, it means that the CDN's request to access the content stored on our servers couldn't be completed successfully. This can happen due to various reasons, including:

1. Network connectivity issues: If there are network connectivity issues or outages between the CDN and our servers, the CDNs requests may fail as they can't establish a connection with our servers.

2. Server overload: If our servers are experiencing a high volume of traffic or are overloaded by the number of requests, they may not be able to respond to the CDN's request, leading to failure.

3. DNS resolution issues: If the DNS (Domain Name System) records for our server's IP address are incorrect or outdated, it can cause issues with the CDN's ability to resolve the server's IP address, leading to failure.

4. CDN configuration issues: If the CDN settings are not correctly configured, it can lead to issues in accessing the content stored on our servers.

To fix this issue, we need to troubleshoot the root cause and take appropriate steps to resolve it. This may involve reviewing network connectivity, updating DNS records, optimizing server performance, and checking CDN configuration.