Posted in
Windows Powershell,
Windows Server |
2 Comments | 2,440 views | 14/03/2014 10:09
You can check all reverse DNS records with DNS records with following script to see if they are equal:
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| $Servers = Get-DnsServerResourceRecord -ZoneName contoso.domain.com
foreach ($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"
}
} |
$Servers = Get-DnsServerResourceRecord -ZoneName contoso.domain.com
foreach ($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"
}
}
If they are not equal, that will output results.
You should run this script on a Windows Server 2012/R2 DNS server with elevated privileges.
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