For more information on using this script, see the article Adminstratively Managing User Contact Lists by Nick Smith.
#Contributed by Nick Smith, Microsoft
#Supported Versions: Office Communications Server 2007 R2
#Get User Information
$User = Get-WmiObject -Query "Select * from MSFT_SIPESUserSetting where PrimaryURI = ' sip:user@domain.com '"
$UserInstanceID = $User .InstanceID
#Check if contact is already added to user's contact list
$Contact = ( Get-WmiObject -Query "Select * from MSFT_SIPESUserContactData where UserInstanceID = '$UserInstanceID'" | Where { $_ .SIPURI -like "sip: userToCheck@domain.com " })
if ( $Contact -ne $null ) { #The contact is on the user's contact list
Write-Host "The contact exists on the user's contact list"
}
elseif ( $Contact -eq $null ) { #The contact is not on the user's contact list
Write-Host "The contact does not exist on the user's contact list"
}