Set-EX16DNSRecords.ps1

<#

      Author: I.C.A. Strachan / O. Doron
      Version: 1.0
      Version History:

      Purpose: Create AutoDiscover Zone and add ResourceRecord
             
              Replace your local domain name and Mailbox server(s) IP address(es) with the 
              ones in the example:

      Example:

      .\Set-EX16DNSRecords.ps1 -fqdn domain.local -ServerIPAddress 192.168.1.4, 192.168.1.5 -verbose


#>
[CmdletBinding()]
Param(
   [string]$fqdn ='domain.local',
   [string[]]$ServerIPAddress= @('192.168.1.4', '192.168.1.5')
)

BEGIN{
   $dnsRRA = @{
      Name = '.'
      Zonename = "autodiscover.$($fqdn)"
      AllowUpdateAny =  $true
      TimeToLive = '01:00:00'
   }

   $mailRRA = @{
      Name = '.'
      Zonename = "mail.$($fqdn)"
      AllowUpdateAny =  $true
      TimeToLive = '01:00:00'
   }
       
   $webmailRRA = @{
      Name = '.'
      Zonename = "webmail.$($fqdn)"
      AllowUpdateAny =  $true
      TimeToLive = '01:00:00'
   }
       
   $srvRRA = @{
      Name = '.'
      Zonename = "_autodiscover._tcp.$($fqdn)"
      DomainName = "autodiscover.$($fqdn)"
      priority = '0'
      weight    = '0' 
      port      = '443'
      AllowUpdateAny =  $true
      TimeToLive = '01:00:00'
   }
       
   $dnsPZ = @{
      Name = "autodiscover.$($fqdn)"
      ReplicationScope = 'Forest'
      DynamicUpdate = 'Secure'
   }

   $mailPZ = @{
      Name = "mail.$($fqdn)"
      ReplicationScope = 'Forest'
      DynamicUpdate = 'Secure'
   }
       
   $webmailPZ = @{
      Name = "webmail.$($fqdn)"
      ReplicationScope = 'Forest'
      DynamicUpdate = 'Secure'
   }
       
   $srvPZ = @{
      Name = "_autodiscover._tcp.$($fqdn)"
      ReplicationScope = 'Forest'
      DynamicUpdate = 'Secure'
   }
       
   Import-Module DNSServer -Verbose:$false
}

PROCESS{
   #Only Add Zone is count is zero (doesn't exists)
   If (@(Get-DnsServerZone $dnsRRA.zonename -ErrorAction SilentlyContinue ).Count -eq 0 ){
      Write-Verbose "Creating DNS Zone: $($dnsPZ.name)"
      Add-DnsServerPrimaryZone @dnsPZ
   }
   Else{
         Write-Verbose "DNS Zone $($dnsPZ.name) already exists"
   }

   If (@(Get-DnsServerZone $mailRRA.zonename -ErrorAction SilentlyContinue ).Count -eq 0 ){
      Write-Verbose "Creating DNS Zone: $($mailPZ.name)"
      Add-DnsServerPrimaryZone @mailPZ
   }
   Else{
         Write-Verbose "DNS Zone $($mailPZ.name) already exists"
   }

   If (@(Get-DnsServerZone $webmailRRA.zonename -ErrorAction SilentlyContinue ).Count -eq 0 ){
      Write-Verbose "Creating DNS Zone: $($webmailPZ.name)"
      Add-DnsServerPrimaryZone @webmailPZ
   }
   Else{
         Write-Verbose "DNS Zone $($webmailPZ.name) already exists"
   }

   If (@(Get-DnsServerZone $srvRRA.zonename -ErrorAction SilentlyContinue ).Count -eq 0 ){
      Write-Verbose "Creating DNS Zone: $($srvPZ.name)"
      Add-DnsServerPrimaryZone @srvPZ
   }
   Else{
         Write-Verbose "DNS Zone $($srvPZ.name) already exists"
   }
    

   #Get string equivalent of all A records
   $RRA = Get-DnsServerResourceRecord -ZoneName "autodiscover.$($fqdn)" -RRType A | Out-String
   $RRB = Get-DnsServerResourceRecord -ZoneName "mail.$($fqdn)" -RRType A | Out-String
   $RRC = Get-DnsServerResourceRecord -ZoneName "webmail.$($fqdn)" -RRType A | Out-String
   $RRD = Get-DnsServerResourceRecord -ZoneName "_autodiscover._tcp.$($fqdn)" -RRType Srv | Out-String

   $ServerIPAddress | ForEach-Object {
      If (!$RRA.Contains($_)){
         Write-Verbose "Adding resource record $_ to $($dnsPZ.name)"
         Add-DNSServerResourceRecordA @dnsRRA -IPv4Address $_
      }
      Else{
         Write-Verbose "Resource record $_ exists in $($dnsPZ.name)"
      }
             
      If (!$RRB.Contains($_)){
         Write-Verbose "Adding resource record $_ to $($mailPZ.name)"
         Add-DNSServerResourceRecordA @mailRRA -IPv4Address $_
      }
      Else{
         Write-Verbose "Resource record $_ exists in $($mailPZ.name)"
      }

      If (!$RRC.Contains($_)){
         Write-Verbose "Adding resource record $_ to $($webmailPZ.name)"
         Add-DNSServerResourceRecordA @webmailRRA -IPv4Address $_
      }
      Else{
         Write-Verbose "Resource record $_ exists in $($webmailPZ.name)"
      }
   }
   
   $srvRRA | ForEach-Object {
       If (!$RRD.Contains($($srvRRA.DomainName))){
         Write-Verbose "Adding resource record $($srvRRA.DomainName) to $($srvPZ.name)"
         Add-DNSServerResourceRecord -Srv @srvRRA
      }
      Else{
         Write-Verbose "Resource record $($srvRRA.DomainName) exists in $($srvPZ.name)"
      }
   }
}

END{}