Script um SIP Adressen zu erstellen

Get-AdUser -Filter * | ?{$_.Surname -ne "" -and $_.Givenname -ne ""} | %{set-aduser $_.SamAccountName -Replace @{"msRTCSIP-PrimaryUserAddress"="$($_.GivenName).$($_.surname)@domain.com"}}  

#Variablen
$domain = "@domain.de  
$exServer = 'ex01.domain.de'  

# AD Modul laden
Import-Module ActiveDirectory
# Verbindung zum Exchange Server herstellen
$exSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "http://$exServer/powershell"  
Import-PSSession $exSession

# Alle Mailboxen durchlaufen
get-mailbox -RecipientType UserMailbox | %{
    $all = $_.EmailAddresses
    if ($all -like 'EUM:*@*'){  
        $userobj = Get-AdUser $_.DistinguishedName
        $newSIPUri =  "$($userobj.GivenName).$($userobj.Surname)$domain"  
        for ($i = 0;$i -lt $all.Count -1;$i++){
             if($all[$i] -like 'EUM:*@*'){  
                $all[$i] = $all[$i] -replace '^(EUM:)([^;]+)',('$1' + $newSIPUri)  
             }
        }
        write-host "Ändere SIP-URI für User '$($userobj.SamAccountName)' auf '$newSIPUri'" -F green  
        Set-Mailbox $_.DistinguishedName -EmailAddresses $all
    }
}
Remove-PSSession $exSession