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$DomainServers = Get-ADComputer -Filter *
$ChildDomainServers = Get-ADComputer -Filter * -SearchBase "DC=child,DC=domain,DC=com" -Server "child.domain.com"
$Servers = Get-Content C:\Servers.txt
foreach ($Server in $Servers)
{
	$DN = $null;
	$DN = ($DomainServers | where DNSHostName -eq "$Server").DistinguishedName
	if (!$DN)
	{
		$DN = ($ChildDomainServers | where DNSHostName -eq "$Server").DistinguishedName
		if (!$DN)
		{
			Add-Content -Value $Server -Path C:\DNs.txt
		}
		else
		{
			Add-Content -Value $DN -Path C:\DNs.txt
		}
	}
	else
	{
		Add-Content -Value $DN -Path C:\DNs.txt		
	}
}

$DomainServers = Get-ADComputer -Filter * $ChildDomainServers = Get-ADComputer -Filter * -SearchBase "DC=child,DC=domain,DC=com" -Server "child.domain.com" $Servers = Get-Content C:\Servers.txt foreach ($Server in $Servers) { $DN = $null; $DN = ($DomainServers | where DNSHostName -eq "$Server").DistinguishedName if (!$DN) { $DN = ($ChildDomainServers | where DNSHostName -eq "$Server").DistinguishedName if (!$DN) { Add-Content -Value $Server -Path C:\DNs.txt } else { Add-Content -Value $DN -Path C:\DNs.txt } } else { Add-Content -Value $DN -Path C:\DNs.txt } }