Problem with Exchange server monitoring

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.NET3.5

C#

.NET

server

, +

Hello All,

I have a problem with Exchange server 2007. I was trying to execute the following query get-mailbox | FL. This query was working when I tried it in the Exchange server's power shell console after executing following query Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin.

But I need it to be executed from a remote machine, so I have executed it from my powershell console , as follows...

$server='192.168.1.23';$pwd= convertto-securestring '123' -asplaintext -force;$cred=new-object -typename System.Management.Automation.PSCredential -argumentlist 'exchangeserver\Administrator',$pwd; invoke-command -computername $server -credential $cred -scriptblock {Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin get-mailbox | FL}

But, this query fails with the following error...

A positional parameter cannot be found that accepts argument 'get-mailbox'.

  +CategoryInfo  :InvalidArgument:  {:} [Add-PSSnapin], ParameterBIndingException
  +FullyQualifiedErrorId: PositionalParameterNotFound,Microsoft.Powershell.Commands.AddPSSnapinCommand

I have modified this query again and added a ; after the snapin add section.

$server='192.168.1.23';$pwd= convertto-securestring '123' -asplaintext -force;$cred=new-object -typename System.Management.Automation.PSCredential -argumentlist 'exchangeserver\Administrator',$pwd; invoke-command -computername $server -credential $cred -scriptblock {Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin; get-mailbox | FL}

This is also fails with the following error.

Active Directory server exchangeserver.xxxxxx.local is not available. Error message: The supplied credential is invalid. 

     + CategoryInfo           :   NotSpecified: <0:int32> [Get-MailBox],ADOperationException
     + FullyQualifiedErrorId  :   A2B6F75B,Microsoft.Exchange.Management.RecipientTasks.GetMailbox

Then I have removed the add-snap-in section from the command and executed again.

$server='192.168.1.23';$pwd= convertto-securestring '123' -asplaintext -force;$cred=new-object -typename System.Management.Automation.PSCredential -argumentlist 'exchangeserver\Administrator',$pwd; invoke-command -computername $server -credential $cred -scriptblock {get-mailbox | FL}

Now it throws another error message.

The term 'get-mailbox' is not recognised as the name of a cmdlet, function, script file or operable program.
Check the spelling of the name, or if a path was included, verify that the path is corerct and try again.

     + CategoryInfo           :   ObjectNotFound: <get-mailbox:String> [],CommandNotFoundException
     + FullyQualifiedErrorId  :   CommandNotFoundException

Can someone help me on this?

Thanks in advance