$Servers = Get-DnsServerResourceRecord -ZoneName contoso.domain.com
 
foreach ($Server in $Servers)
{
	# Clear Values
	$ServerName = $Null;
	$DNSName = $Null;
	$DNSHostName = $Null;
	$DNSIPAddress = $Null;
	$ReverseDNSHostName = $Null;
 
	# Resolve DNS Name
	$ServerName = $Server.HostName
	$DNSName = (Resolve-DnsName $ServerName)
 
	if ($DNSName)
	{	
		# Get Reverse DNS Name
		$DNSHostName = $DNSName.Name
		$DNSIPAddress = $DNSName.IPAddress
		$ReverseDNSHostName = ([System.Net.Dns]::GetHostByAddress("$DNSIPAddress")).HostName
 
		if ($DNSHostName -eq $ReverseDNSHostName -and $ReverseDNSHostName -ne $Null)
		{
			Write-Host "."
		}
		else
		{
			$Output = $DNSHostName + ";" + $ReverseDNSHostName
			Write-Host $Output
		}
	}
	else
	{
		Write-Host "Cannot resolve $ServerName"
	}
}