Exchange 2010 AntiSpamAgent Install

Merhaba;

AntiSpamAgent install ederken aşağıdaki hatayı alıyorum

The term 'hostname' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the sp
elling of the name, or if a path was included, verify that the path is correct and try again.
At E:\exchange server\v14\scripts\install-AntispamAgents.ps1:16 char:28
+ $localservername = hostname <<<<
+ CategoryInfo : ObjectNotFound: (hostname:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: Please exit Windows PowerShell to complete the installation.
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport

Identity Enabled Priority
-------- ------- --------
Connection Filtering Agent True 9
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: Please exit Windows PowerShell to complete the installation.
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
Content Filter Agent True 9
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: Please exit Windows PowerShell to complete the installation.
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
Sender Id Agent True 9
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: Please exit Windows PowerShell to complete the installation.
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
Sender Filter Agent True 9
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: Please exit Windows PowerShell to complete the installation.
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
Recipient Filter Agent True 9
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: Please exit Windows PowerShell to complete the installation.
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
WARNING: The following service restart is required for the change(s) to take effect : MSExchangeTransport
Protocol Analysis Agent True 9

WARNING: The agents listed above have been installed. Please restart the Microsoft Exchange Transport service for
changes to take effect.
Cannot bind argument to parameter 'Identity' because it is null.
+ CategoryInfo : InvalidData: (:) [Set-TransportServer], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Set-TransportServer