BPA Errors: DNS can't resolve GC, Kerberos, PDC Resource Record, etc.
Hello, I've been poking around this for hours now and could use another set of eyes. This server has been the PDC for quite some time but I discovered the last people that managed this place, didn't demote the old 2008R2 server (thankfully it still existed virtualized). So I was able to do a graceful demotion of that and removed it from the domain. I'm now trying to resolve some other errors in that come up in the BPA scan... All reference DNS and I just can't figure this out. I've been beating head against the wall trying to understand what's happening, This is MS Server Standard 2022 only 1 DC and DNS. (yeah I know, don't get me started, but it's a really small office)... Would love some suggestions. Thanks!DNS lookup performance
Hello all I've got this to do what I want but thought I'd run it past people who know more than me in the hope someone would be kind enough to advise on the following. The intention is to run this every few minutes using task scheduler, I'll push to one or more machines with an RMM. Questions. Is this an efficient an accurate way to do this? Are there any improvements anyone wants to suggest for the code Am I re-inventing a wheel that I can get somewhere for free or low cost? I'm waiting for the new version of GRC's DNS testing tool so this is a stopgap unless it works well enough. TIA # Define an array to store the DNS Servers to be queried with thier FQDN and IP address $dnsServers = @() # Add 5 hosts with their FQDN and IP addresses $dnsServers += [PSCustomObject]@{ FQDN = "OurDNS1"; IPAddress = "14.15.16.17" } $dnsServers += [PSCustomObject]@{ FQDN = "OurDNS2"; IPAddress = "11.12.13.14" } $dnsServers += [PSCustomObject]@{ FQDN = "Cloudflare"; IPAddress = "1.1.1.1" } $dnsServers += [PSCustomObject]@{ FQDN = "Quad9"; IPAddress = "9.9.9.9" } $dnsServers += [PSCustomObject]@{ FQDN = "Google"; IPAddress = "8.8.8.4" } # Define an array to store target FQDNs $targetFqdns = @( "bbc.co.uk", "www.porsche.com", "www.amazon.co.uk" ) # Get the current date in yyyy-MM-dd format $currentDate = Get-Date -Format "yyyy-MM-dd" # Define the path to the CSV file with the current date in the filename $filePath = "$PSScriptRoot\DNSResults_$currentDate.csv" # Initialize the CSV file with headers if it doesn't exist if (-not (Test-Path $filePath)) { "Timestamp,Milliseconds,TargetURL,DNSServerIP,DNSServer" | Out-File -FilePath $filePath } # Loop through each target host and then each DNS server foreach ($targetFqdn in $targetFqdns) { foreach ($dnsServer in $dnsServers) { # Measure the time taken to run the command $measure = Measure-Command -Expression { nslookup $targetFqdn $dnsServer > $null 2>&1 } # Get the current date and time in ISO 8601 format $timestamp = Get-Date -Format "yyyy-MM-ddTHH:mm:ss" # Get the total milliseconds and round up to a whole number $milliseconds = [math]::Ceiling($measure.TotalMilliseconds) # Append the timestamp, milliseconds, domain, server, and name to the CSV file $result = "$timestamp,$milliseconds,$targetFqdn," $dnsServerUSed = "$($dnsServer.IPAddress),$($dnsServer.FQDN)" $output = $result + $dnsServerUsed $output | Out-File -FilePath $filePath -Append } }DNS record auto registered even the auto registration option was unchecked
Hello guys, I have an DC which have two NICs, A for Domain service and B for camera server. I don't want the IP address of NIC B registered in our DNS, so I uncheck the auto register option in the advance setting of NIC B. However, the IP address of it still keep registering t our DNS even I have manually deleted that option. I have checked the steps in the official article and it doesn't help. https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/unwanted-nic-registered-dns-mulithomed-dc Any suggestion is much appreciated.
Windows DNS server crash?
Our DNS servers crashed and took our network down. I rebooted them and its back but I foud the below error I have never seen before. Can't find anything in any log but this and its never happened before. Is thewre any way to tell what caused this? Event ID 906 lsass (796,G,0) A significant portion of the database buffer cache has been written out to the system paging file. This may result in severe performance degradation. See help link for complete details of possible causes. Previous cache residency state: 64% (23809 out of 37063 buffers) (72 seconds ago) Current cache residency state: 15% (4338 out of 28472 buffers) Current cache size vs. target: 99% (214.508 / 214.711 MBs) Physical Memory / RAM size: 8191.023 MBsPostgreSQL - Flexible Compute - VNet DNS Update
Hello, I have a customer planning to update the VNet DNS from custom to Default. The client is running a PostgreSQL - Flexible server with VNet integration. Does the DNS change impact PostgreSQL - Flexible compute? What is the best way to update the PostgreSQL - Flexible compute without having to restart? Thanks, TerruDNS DOH and DOT Server 2025
Does anyone know if Windows Server 2025 is planning to support native DNS over HTTPS or DNS over TLS? As of now, windows clients can be configured to support this, but MS DNS is not DOH or DOT compliant. I am just wondering if this is being considered or if it is on the roadmap. Thanks!Setting up DNS in a Hybrid Environment.
Hello Folks, I’m not sure when this became a series, but it’s looking like it’s going to be ongoing. I’m hoping it can give the community a sense of how you can slowly adopt cloud services to enhance your on-prem environment. It started a few weeks ago with the post on how I needed to replace the edge device on my home network. Then I followed up with how I now can use the site-to-site VPN I set up to access (RDP & SSH) all the servers in my environment using the Bastion host on Azure. But I’m at a point where I’ve got demo servers and services on both sides of the VPN. Name resolution is fast becoming an issue. How do I set up a DNS structure to efficiently resolve server IP addresses from an on-premises environment and vice versa without deploying VM-based DNS servers.
Adding AT&T DoH To Official List Of DNS Providers
Hello, Our team at AT&T has built a DoH service that we would like to be added as a default option for Edge. AT&T's Public DoH should allow customers to choose our DoH service as an option in Edge. AT&T's public policy can be seen in the attached document. Please inform us of the next steps needed to have this option available for users. https://about.att.com/privacy/privacy-notice.html
DNS Issue - nslookup resolve to random localhost ip
Hello all, I am new here. hope there is someone will help me. Please help me to resolve this issue. the host domain upxxxxx.edu.my can be resolve using public DNS. but while using internal DNS it will resolve to random localhost IP. i had restart the DNS/AD server. i made nslookup again after reboot then it appear 127.118.0.45 (other local IP address). *this is new fresh install windows server 2022 std with AD, DHCP and DNS roles. thank you for your help. i am very appreciate the effort.
