Exchange Powersehll Remote Script

Dear Support,

i have following Problem:

If i exec this Scritp on the powershell of PRTG Server, everything works fine and i get all Values. But if i Run it with a PRTG Sensor ill get an Error, i wonder why the Script is Executed with the Computer Account of PRTG. OF COurse the XXXX are replaced with the Real Adresses and Server Names

----------------------------------------------------------------------------

param (
[String]$mailbox="xxxxxxxxx"
)

#Exchange 2010 with current user

$ExchangeOrNLBFQDN = "xxxxxx"
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "http://$ExchangeOrNLBFQDN/PowerShell/?SerializationLevel=Full" -Authentication Kerberos 

Import-PSSession $Session -DisableNameChecking -AllowClobber



# Letzer Monat // Variablen mit -Start & -End können nicht in die Remote Session übergeben werden
$CurrentDate = Get-Date
$LastMonth = (($CurrentDate).AddMonths(-1)).ToUniversalTime().Month
$LastMonthYear = (($CurrentDate).AddMonths(-1)).ToUniversalTime().Year
$LastMonthName = $LastMonth | %{(Get-Culture).DateTimeFormat.GetMonthName($_)}
$LastMonthDays = [DateTime]::DaysInMonth($LastMonthYear, $LastMonth)
$StartOfPrevMonth = Get-Date -Month $LastMonth -Year $LastMonthYear -Day 1 -Hour 0 -Minute 0 -Second 0 
$EndOfPrevMonth = ($StartOfPrevMonth).AddMonths(1).AddTicks(-1)


# Abruf des Messagtrackinglogs
$WeekCS = Get-Messagetrackinglog -Server $ExchangeOrNLBFQDN -Recipients $mailbox -Start $StartOfPrevMonth -End $EndOfPrevMonth -ResultSize unlimited -EventID RECEIVE


$InternWeekCS=$WeekCS| where {($_.Sender -like "*@xxxxxx") -or ($_.Sender -like "*xxxxxxxx")}
$ExternWeekCS=$WeekCS| where {($_.Sender -notlike "*x") -and ($_.Sender -notlike "*xxxxxxxx") } 
$AllWeekCS=$WeekCS

$InternCountWeekCS=$InternWeekCS | measure
$InternSumWeekCS14=$InternCountWeekCS.count

$ExternCountWeekCS=$ExternWeekCS | measure
$ExternSumWeekCS14=$ExternCountWeekCS.count

$AllCountWeekCS=$AllWeekCS | measure
$AllSumWeekCS14=$AllCountWeekCS.count

#$AllSumWeekCS14
#$InternSumWeekCS14
#$ExternSumWeekCS14



#write-host "Sending XML Result to STDOUT"

"<prtg>
	<result>
		<channel>Sendcount2</channel>
		<value>$AllSumWeekCS14</value>
		<showChart>1</showChart>
		<showTable>1</showTable>
		<unit>Count</unit>
		<customunit>Mails</customunit>
	    <mode>Absolute</mode>
	</result>
	<result>
		<channel>Sendcount1</channel>
		<value>$InternSumWeekCS14</value>
		<showChart>1</showChart>
		<showTable>1</showTable>
		<unit>Count</unit>
		<customunit>Mails</customunit>
	    <mode>Absolute</mode>
	</result><result>
		<channel>Sendcount</channel>
		<value>$ExternSumWeekCS14</value>
		<showChart>1</showChart>
		<showTable>1</showTable>
		<unit>Count</unit>
		<customunit>Mails</customunit>
	    <mode>Absolute</mode>
	</result>
	
	
	
</prtg>"

            
---------------------------------------------------------------------------------------

And here is the Result of the Sensor

-----------------------------------------------------------------------------------------


New-PSSession : [ixxxxxxxt] Beim Verarbeiten von Daten vom 
Remoteserver "xxxxxxxxxxt" ist folgender Fehler aufgetreten: 
Benutzer "xxxxxx/xxxxx/PRTGServer" ist keiner 
Verwaltungsrolle zugewiesen. Weitere Informationen finden Sie im Hilfethema 
"about_Remote_Troubleshooting".
In C:\Program Files (x86)\PRTG Network Monitor\custom 
sensors\EXEXML\GKS14.ps1:8 Zeichen:12
+ $Session = New-PSSession -ConfigurationName Microsoft.Exchange 
-ConnectionUri "h ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:Re 
   moteRunspace) [New-PSSession], PSRemotingTransportException
    + FullyQualifiedErrorId : IncorrectProtocolVersion,PSSessionOpenFailed
Import-PSSession : Das Argument fr den Parameter "Session" kann nicht 
berprft werden. Das Argument ist NULL. Geben Sie einen gltigen Wert fr das 
Argument an, und fhren Sie den Befehl erneut aus.
In C:\Program Files (x86)\PRTG Network Monitor\custom 
sensors\EXEXML\GKS14.ps1:10 Zeichen:18
+ Import-PSSession $Session -DisableNameChecking -AllowClobber
+                  ~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Import-PSSession], ParameterBi 
   ndingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.Power 
   Shell.Commands.ImportPSSessionCommand
 
Get-Messagetrackinglog : Die Benennung "Get-Messagetrackinglog" wurde nicht 
als Name eines Cmdlet, einer Funktion, einer Skriptdatei oder eines 
ausfhrbaren Programms erkannt. šberprfen Sie die Schreibweise des Namens, 
oder ob der Pfad korrekt ist (sofern enthalten), und wiederholen Sie den 
Vorgang.
In C:\Program Files (x86)\PRTG Network Monitor\custom 
sensors\EXEXML\GKS14.ps1:25 Zeichen:11
+ $WeekCS = Get-Messagetrackinglog -Server $ExchangeOrNLBFQDN -Recipients 
$mailbox ...
+           ~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (Get-Messagetrackinglog:String)  
   [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
<prtg>
	<result>
		<channel>Sendcount2</channel>
		<value>0</value>
		<showChart>1</showChart>
		<showTable>1</showTable>
		<unit>Count</unit>
		<customunit>Mails</customunit>
	    <mode>Absolute</mode>
	</result>
	<result>
		<channel>Sendcount1</channel>
		<value>0</value>
		<showChart>1</showChart>
		<showTable>1</showTable>
		<unit>Count</unit>
		<customunit>Mails</customunit>
	    <mode>Absolute</mode>
	</result><result>
		<channel>Sendcount</channel>
		<value>0</value>
		<showChart>1</showChart>
		<showTable>1</showTable>
		<unit>Count</unit>
		<customunit>Mails</customunit>
	    <mode>Absolute</mode>
	</result>
	
	
	
</prtg>