About Host and Network Interface Settings : Verifying the DNS settings
  
Verifying the DNS settings
1. Under Domain Health Check, select Test DNS.
An abbreviated test status appears for the most recent test run: Passed, Failed, or Undetermined. The test status is blank until the initial DNS settings test.
2. Specify the fully qualified Active Directory domain in which the Edge is a member. Typically, this is your company domain name.
3. Click Test DNS to run the test. The Management Console dims this button until you specify the domain name.
The time and date of the last test appears after Last Run.
When the test runs, the status In Progress appears. After the test completes, the test logs and test result appear.
The test result can be one of these statuses:
Passed
Failed
Undetermined—A test with an undetermined status indicates that the test could not accurately determine a pass or fail test status.
To view diagnostic test logs, click Show logs. The number of lines in the log appear after Show logs or Hide logs.
The test logs are usually interesting only after a test fails.
An abbreviated form of the time stamp appears in the left margin of each line. To see the original, full time stamp in the form of a tooltip, mouse over a time stamp. Not all log lines have time stamps, because third-party applications generate some of the logging data.
The log lines highlight errors in red and warnings in yellow.