### script made by Michel Belanger###

##get the interfaceindex of ethernet card
$interfaceIndex = Get-NetAdapter -Name ethernet | select -ExpandProperty interfaceindex

##Get the ipv4 address of the ethernet card##
$serverip = Get-NetIPAddress -InterfaceIndex $interfaceIndex | select -ExpandProperty ipv4address

## reset the dns interface set by default after installing adds
Set-dnsclientserveraddress -interfaceindex $interfaceIndex -ResetServerAddresses


## set the new dns interface index
Set-dnsclientserveraddress -interfaceindex $interfaceIndex -serveraddresses $serverip


##split ip server ipaddress to get the reverse zone##
$splitserver = $serverip.Split(".")


$Reverse = $splitserver[2] + "." + $splitserver[1] + "." + $splitserver[0] + ".in-addr.arpa" 
$ReverseDns = $splitserver[2] + "." + $splitserver[1] + "." + $splitserver[0] + ".in-addr.arpa.dns"
Add-DnsServerPrimaryZone $Reverse -zonefile $ReverseDns

##add ptr record to reverse lookup zone##
$hostname = $env:COMPUTERNAME + "." + (Get-WmiObject win32_computersystem).domain
Add-DnsServerResourceRecordPtr -Name $splitserver[3] -ZoneName $Reverse -AllowUpdateAny -TimeToLive 01:00:00 -AgeRecord -PtrDomainName $hostname