Tag Archives: dns timetolive ttl windows server 2016 2019

Mass/bulk TimeToLive update Windows server DNS (primary zones)

TJust in case someone needs to bulk/mass update (for example) TimeToLive parameter on all A (CNAME, MX, TXT…) records in all primary zones on Windows Server 2016/2019 DNS server …

$allzones = Get-DnsServerZone | Where-Object -Property ZoneType -EQ -Value “Primary”
foreach ($allzone in $allzones) {
$olds = Get-DnsServerResourceRecord -ZoneName $allzone.ZoneName -Name “@” -RRType A
foreach ($old in $olds) {
#$old = “”
#$new = “”
$new = $old.Clone()
$new.TimeToLive = [System.TimeSpan]::FromMinutes(1)
Set-DnsServerResourceRecord -OldInputObject $old -NewInputObject $new -ZoneName $allzone.ZoneName -PassThru
}
}