Just noticed that our BYOC Edge instance is rejecting HTTPS callbacks from our legacy Zendesk integration during the final cutover. The edge logs show a TLS handshake timeout when processing the interaction payload. We are using the standard genesyscloud/edge docker image v2.4.0. The config below is applied, but the connection drops immediately. Any ideas why the cert validation fails here?
Ah, this is a recognized issue… when shifting from legacy Zendesk webhooks to the BYOC edge, the default TLS settings in the Docker container often reject intermediate certificates that the old system accepted silently. The genesyscloud/edge image v2.4.0 uses strict cipher suites by default, which causes the handshake timeout you see in the logs. You need to explicitly allow the older TLS 1.2 ciphers in your edge.yaml config. Add tls_min_version: "1.2" and ensure insecure_skip_verify is set to false for production, but check if your Zendesk endpoint is using a self-signed cert during migration. If so, you might need to mount the specific CA bundle into /etc/ssl/certs/ in the container. I ran into this during a JMeter load test where the connection pool exhausted because of handshake retries. The fix is usually updating the ca_certs_path in the config to point to the mounted bundle. This prevents the edge from dropping the connection before the payload is even parsed.