Sending HTTP request failed. Server functionality will be affected if messages are failing consistently. Sending the message ...

Sending HTTP request failed. Server functionality will be affected if messages are failing consistently.

Sending the message to %1 failed. IP Address is %2. Error code is %3. Content-Type is %4. Http Error Code is %5.
Cause: Network connectivity issues or an incorrectly configured certificate on the destination server. Check the eventlog description for more information.
Resolution:
Check the destination server to see that it is listening on the same URI and it has certificate configured for MTLS. Other reasons might be network connectivity issues between the two servers.