Create Reverse DNS records

Question

Hi Experts

i have few servers which dont have reverse dns records.
for example. server1 and server2 have forward lookup records. i.e server1@Company portal .com pointing to 192.168.5.20, server2@Company portal .com pointing to 192.168.5.21
but these servers dont have reverse dns records.

1. How do i create reverse DNS records for these servers using powershell.
2. i have servers list in the below format, how do i import the csv file and create reverse dns records

Answer 1

Hi @ RisingFlight-7863 ,

you can give this a try (not tested by myself). Use the script on your own risk.

$file = "server.csv"
Import-Csv -Path $file | foreach {
    $name = (($_.IPAddress).Split("."))[3]
    # Modify the -ZoneName to your needs (name of the reverse lookup zone in DNS)
    # Modify the PtrDomainName domain part to your needs (contoso.com)
    Add-DnsServerResourceRecordPtr -Name "$name" -ZoneName "0.168.192.in-addr.arpa" -AllowUpdateAny -TimeToLive 01:00:00 -AgeRecord -PtrDomainName "$_.HostName.contoso.com"
    }

---

(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards
Andreas Baumgarten

Answer 2

will the below script work for me

$ServerName = "MyDomainController"   
$domain = "contoso.com"   
Import-Csv C:\temp\Records.csv | ForEach-Object {   
#Def variable   
$Computer = "$($_.HostName).$domain"   
$addr = $_.IP -split "\."   
$rzone = "$($addr[1]).$($addr[0]).in-addr.arpa"   
#write-host $rzone  
#Create Dns entries   
dnscmd $Servername /recordadd $domain "$($_.HostName)" A "$($_.IPAddress)"   
#Create New Reverse Zone if zone already exist, system return a normal error   
#dnscmd $Servername /zoneadd $rzone /primary   
#Create reverse DNS   
dnscmd $Servername /recordadd $rzone "$($addr[3]).$($addr[2])" PTR $HostName  
}