Thursday, November 24, 2005

Using Monad and WMI with Exchange 2003

I’ve been playing around a bit more this week with the MSH beta and decided I’d share some of the stuff you can do using the WMI functionality in Monad. To start off here’s some one-liners that can be used to get information from the Exchange 2003 WMI classes. Learning how to do things in monad is a little tricky at the moment other peoples blog’s tend to be the best source of information I worked out the one-liners using a post from Adam Barr’s blog
http://www.proudlyserving.com/archives
/2005/08/monad_and_wmi.html
also the following blog was really useful as well as it has a whole bunch of samples that helped when I got stuck. http://mow001.blogspot.com/

Display the SMTP Message Queues

get-wmiobject -class Exchange_SMTPQueue -Namespace ROOT\MicrosoftExchangev2 -ComputerName servername | select-object LinkName,MessageCount,Size

Display Mailbox sizes

get-wmiobject -class Exchange_Mailbox -Namespace ROOT\MicrosoftExchangev2 -ComputerName servername | select-object MailboxDisplayName,TotalItems,Size

Display Users that are logged onto OWA

get-wmiobject -class Exchange_Logon -Namespace ROOT\MicrosoftExchangev2 -ComputerName servername -filter "ClientVersion = 'HTTP' and LoggedOnUserAccount != 'NT AUTHORITY\\SYSTEM'" | select-object LoggedOnUserAccount,MailboxDisplayname

Display all public folder sizes and message counts

get-wmiobject -class Exchange_Publicfolder -Namespace ROOT\MicrosoftExchangev2 -ComputerName servername | select-object name,messagecount,totalmessagesize

The last one is a sample of listening to the Exchange_Logon class modification events this one still needs a little bit of tweaking

$objConn = New-Object System.Management.ConnectionOptions
$objconn.Impersonation = [System.Management.ImpersonationLevel]::Impersonate
$objconn.EnablePrivileges = 1
$tspan = New-Object System.TimeSpan(0, 0, 10)
$exmangescope = New-Object System.Management.ManagementScope("\\servername\root\MicrosoftExchangeV2", $objconn);
$query = New-Object System.Management.WqlEventQuery("__InstanceModificationEvent",$tspan, "TargetInstance isa `"Exchange_Logon`" and TargetInstance.ClientVersion = `"HTTP`" and TargetInstance.LoggedOnUserAccount != `"NT AUTHORITY\\SYSTEM`"")
$watcher = New-Object System.Management.ManagementEventWatcher($exmangescope,$query)
$e = $watcher.WaitForNextEvent()
$des = 1
while($des -eq 1){
$e.TargetInstance.LoggedOnUserAccount
$e = $watcher.WaitForNextEvent()
Trap{Break}
}