The IXON Check log file is a technical file with more advanced troubleshooting information. Note that some messages look like an error, but in fact are not and thus can be ignored. These are listed below.

DNS lookup whitelist.ixon.cloud

Cannot resolve host: x.x.x.x

dd/mm/yyyy hh:mm:ss - DNS lookup whitelist.ixon.cloud
No such host is known.

From the list of 200+ IP addresses returned on a DNS lookup for whitelist.ixon.cloud, 20 to 30 hostnames cannot be resolved because they don't have a reverse DNS record. The test only fails if it is not possible to do a reverse DNS lookup for more than 50% of the IP addresses.

Test IXON API connection

Response status code does not indicate success: 401 (UNAUTHORIZED). 
   at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
   at IXON.Check.Server.IXONNetworkChecks.IxonNetworkSecurityChecker.CheckIxonApiForMITMAsync(CancellationToken token)

This indicates a successful test. For security and practical reasons, IXON Check is not authorized to establish the full connection.

Test IXON API communication

System.Net.Http.HttpRequestException: Request failed with status code BadRequest 
{"status": "error", "data": [{"message": "Missing header: IXapi-Version"}], "type": "Error", "count": 1, "links": []}

dd/mm/yyyy hh:mm:ss - Test IXON API communication 
System.Net.Http.HttpRequestException: Request failed with status code BadRequest 
{"type": "Error", "data": [{"message": "Required header", "propertyName": "Api-Version"}], "moreAfter": null, "status": "error"}

This indicates a successful test. For security and practical reasons, IXON Check is not authorized to establish the full connection.

Test MQTT connection

Connecting with MQTT server failed (BadUserNameOrPassword). 
   at MQTTnet.Client.MqttClient.Authenticate(IMqttChannelAdapter channelAdapter, MqttClientOptions options, CancellationToken cancellationToken)
   at MQTTnet.Client.MqttClient.ConnectInternal(IMqttChannelAdapter channelAdapter, CancellationToken cancellationToken)
   at MQTTnet.Client.MqttClient.ConnectAsync(MqttClientOptions options, CancellationToken cancellationToken)
   at MQTTnet.Client.MqttClient.ConnectAsync(MqttClientOptions options, CancellationToken cancellationToken)
   at IXON.Check.Server.IXONNetworkChecks.IxonNetworkSecurityChecker.CheckMqttConnectionAsync(CancellationToken token) in /home/wouter/gitlab/ixon-check/Application/Source/IXON.Check.Server/IXONNetworkChecks/IxonNetworkSecurityChecker.cs:line 175

This indicates a successful test. For security and practical reasons, IXON Check is not authorized to establish the full connection.