$RootDomain = "Contoso.com"
$DomainControllerRoot = (Get-ADDomainController -Filter * -server $RootDomain | select Hostname).hostname[0]
$GlobalCatalog = $DomainControllerRoot +":3268"
$UserPrincipalName = "Name@namespace.com"
if ((get-aduser -ldapfilter "(userPrincipalName=$UserPrincipalName)" -server $GlobalCatalog ).userPrincipalName.length -gt 0)
{
Write-host "UPN NOT unique in Forest : $UserPrincipalName "
}
Else
{
Write-host "UPN UNIQUE in Forest : $UserPrincipalName " 
}

$RootDomain = "Contoso.com" $DomainControllerRoot = (Get-ADDomainController -Filter * -server $RootDomain | select Hostname).hostname[0] $GlobalCatalog = $DomainControllerRoot +":3268" $UserPrincipalName = "Name@namespace.com" if ((get-aduser -ldapfilter "(userPrincipalName=$UserPrincipalName)" -server $GlobalCatalog ).userPrincipalName.length -gt 0) { Write-host "UPN NOT unique in Forest : $UserPrincipalName " } Else { Write-host "UPN UNIQUE in Forest : $UserPrincipalName " }

$Domain = "Contoso.com"  
Get-ADDomainController -Filter * -server $Domain | where {$_.IPv4Address -notlike "10.10.10.*"} | foreach { repadmin /syncall /A /e /q $_.hostname}

$Domain = "Contoso.com" Get-ADDomainController -Filter * -server $Domain | where {$_.IPv4Address -notlike "10.10.10.*"} | foreach { repadmin /syncall /A /e /q $_.hostname}

function get-domfqdn ($fqdn)
 {
 $afqdn= $fqdn.split(",")
 $first = 0
 $Dom=""
 foreach ($pfqdn in $afqdn)
  {
  If ($pfqdn.contains("DC=") -eq $true)
   {
   If ($first -eq 1)
    {
           $Dom = $Dom+"."
    }
   $first = 1
   $Dom = $Dom+$pfqdn.replace("DC=","")
   }
  }
 return $dom
 }

function get-domfqdn ($fqdn)  {  $afqdn= $fqdn.split(",")  $first = 0  $Dom=""  foreach ($pfqdn in $afqdn)   {   If ($pfqdn.contains("DC=") -eq $true)    {    If ($first -eq 1)     {            $Dom = $Dom+"."     }    $first = 1    $Dom = $Dom+$pfqdn.replace("DC=","")    }   }  return $dom  }