Test-OulookConnectivity TimeOut

1. ErrorRecord: Task failed on timeout. Overtime = 00:00:05.7984000.
+ CategoryInfo : OperationTimeout: (Microsoft.Excha...onnectivityTask:TestOutlookConnectivityTask) [Test-
OutlookConnectivity], TaskException
+ FullyQualifiedErrorId : 28CE436B,Microsoft.Exchange.Monitoring.TestOutlookConnectivityTask

I added MB host name in hostfile and ran the test again it was successful.

I removed the entry from hostfile and did a test surprisingly it was successful..  

I would like to know the cause for this ( Temporary ) error ?

Regards,

Srikanth