Questions tagged [domain-name-system]
The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names. Questions involving publicly accessible domains should include the real, Fully Qualified Domain Name (FQDN)
12,501 questions
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Can't resolve DNS when connected to WireGuard
I need help figuring out what I did wrong with my setup.
My main compose file:
name: homelab
networks:
main:
name: main
external: true
driver: bridge
wg_network:
name: wg_network
...
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21
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What DNS hosting allow wildcard to 4 level domain aka "sub-subdomain"? [closed]
I have these records:
@ORIGIN example.tld.
; ...
a.example.tld IN A 100.200.200.100
b.example.tld IN A 1.2.3.4
c.example.tld IN A 14.88.69.42
What DNS hosting allow me to ...
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103
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matching up DNS A and PTR records
If you have a minute, I am a little confused about addressing rDNS warning for outbound emails. I have this setup...
http web server (ip 1.2.3.4, hostname apps.acme.com)
smtp mail server (ip 1.2.3.5, ...
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54
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How to point the domain name to (IIS Webserver) docker container?
I have set up an (IIS Webserver) Docker container on my Windows Server, running on port 8080, and successfully hosted a website inside the container. However, I am currently facing challenges in ...
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53
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Set HostName only using Dual DHCP DNS Server
I have a small network where I run Dual DHCP DNS Server on one of the devices.
I would like all other devices to use dynamic IP addresses, but still be able to define the hostnames of those (centrally ...
- 99
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2
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48
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Setting up DNS for routing mail to corresponding subdomains
I'm trying to configure DNS for handling mail across multiple subdomains, where each subdomain has its own mail server. My goal is to route mail for user@%subdomain%.example.com to the server hosted ...
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67
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Issue with IIS Hosting: DNS_PROBE_FINISHED_NXDOMAIN when Reloading
I have a project hosted on IIS that works fine most of the time. Sometimes reloading the page results in the error:
"This site can't be reached. Check if there is a typo in esuport.mm.local. If ...
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2
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42
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DNS server with private authentication [closed]
I want to run a DNS server on a VPS, but I don't want to expose it to the world for safety reasons (DDoS attacks), so I want it to only be usable by myself from two devices - Windows laptop and ...
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37
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Does it matter if nameservers are uppercase?
I'm currently migrating a bunch of websites to a new server and I don't have access to some of the website domains in order to update the DNS, however their nameservers are pointing to a domain I ...
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26
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Resolving DNS against an AWS Inbound Endpoint Resolver
Question
Can you send a DNS query to an AWS inbound endpoint resolver asking to lookup a record in a private zone for which it has a resolver rule (e.g. by using a standard DNS client such as nslookup ...
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109
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Website alternating between old and new versions despite DNS happening over 48 hours ago
We have recently released a new version of our website and well over 50 hours ago we changed the DNS for the domain. Traffic is going to the new website now, however, randomly it will still send our ...
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34
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dns works and nft http counters rise: no webpage shows :404
0.The main problem is the nft counters increase but no web page shows. Claims http 404 error.
DNS and dig report valid results.From inet firewalld filter_INPUT:
'''meta l4proto {tcp,udp} ct state ...
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24
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Route53 base domain A-record not resolving in Web browser
Recently I migrated a domain (xyz.com) from SquareSpace to AWS Route53 along with all the records, Now all the records are working except for the base domain. It has a www.xyz.com C-Name as well which ...
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Is it terribly bad to limit HTTP connection reuse or is .NET (Core) HttpClient broken from the start?
In the transition from .NET Framework to .NET (formerly .NET Core), Microsoft has introduced a new HTTP client, called System.Net.Http.HttpClient and System.Net.HttpWebRequest is now marked as ...
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Initial RDP connection slow when using DNS name [migrated]
I'm connecting to a computer on my home network via RDP, using mstsc.exe. The step "Securing remote connection..." takes a very long time if I connect to the computer using the DNS name to ...
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61
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DNS lookup fails when IP is on different local subnet
Firstly, I am aware this isn't the proper way to do this but I'm trying to avoid running my own DNS server.
My network is configured in so that there is a router on the 192.168.1.x subnet and that has ...
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1
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100
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SMTP server constant blocking list
I am monitoring a Paragon Insights server (Healthbot), Ubuntu system with kubernets environment, one of the containers called Alert has installed in this the Exim4 tool as MTA to send email ...
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1
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36
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Some email not being received, Google Workspace, .eu TLD
Recently, I've had two companies systems send me mail to my Google Workspace email and it has not been received. I can't determine how long this might have been happening for.
It led me to double ...
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62
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AWS hosted (Route 53) domains, no DNS propagation / Attempting to change DNS resigtrar to CF
I have a pool of 10 domains that were originally hosted through AWS Route 53.
Initially I had two of the domains configured with appropriate DNS records, for AWS EC2 web servers.
Unexpectedly, two ...
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78
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DNS issue on NGINX server pages won't load ERR_NAME_NOT_RESOLVED
OK so I have 5 pages:
login.html
otp.html
billing.html
index.html(for debugging purposes)
page-not-found.html
Intended logic
Enter into browser:
sub.domain.com/path (eg. sub.domain.com/login)
...
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1
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91
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Windows DNS server list all records all zones containing CIDR
From powershell, I can run Get-DnsServerResourceRecord -zonename "test.com" to get all records in the zone.
I can load all zones to a variable, and use a for loop to get all records in all ...
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19
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BIND slave does not acknowledge notifies from master
I can't get BIND slave to accept notifies from master.
Master's log says that notifies are being sent:
05-Nov-2024 11:56:42.655 general: info: zone example_zone.eu/IN/internal-view: loaded serial ...
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53
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Apache HTTPD — Require forward-dns with IPv6 subnets
To restrict access to many (+100) vhosts, I use the statement Require forward-dns authorized-ips.mydomain.tld.
This allows me to easily manage adding and removing IP addresses via DNS in a simple and ...
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1
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53
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how to solve domain name linux server by windows dns server
I have
Windows Server 2012 DNS server with active directory:
192.168.10.10
domain: www.work.local
Debian 12 DNS server:
192.168.10.11
domain: work.it
25 workstations registered in active directory ...
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156
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How to access hosts by hostname when using Windows Wireguard
I setup Wireguard on a Windows desktop (hostname WINDOWS11). I use an iPhone to test Wireguard. I have a standard Linksys router that functions as DNS on my network. It is a consumer router.
Once ...
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0
answers
99
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Why dig is answering SERVFAIL, while nslookup resolving normally on powerdns local zone?
I'm a bit new to local DNS so i want to use 1 node with ip 192.168.100.11 and auth + recursor + dnsdist at one host. Auth server should resolve only local zone (holodev.local in my case), recursor ...
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How do Application Load Balancers maintain high availability without a stable IP address?
Amazon's Application Load Balancers (ALBs) are AWS's default HTTP load balancer, but they don't have static IP addresses. Instead they are given a generated domain name (e.g. myservice-12345678.eu-...
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54
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Windows DNS Server configuration for a specific subdomain and redirect the rest to authority
The application stack has multiple components. e.g. api, public application and internal application. I want to make internal application only accessible from internal network IP ranges. I configured ...
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49
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Email delivery failure
The response was:
DNS Error: DNS type 'mx' lookup of comle.terre.defense.fr responded with code NOERROR DNS type 'aaaa' lookup of localhost. responded with code NXDOMAIN DNS type 'a' lookup of ...
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2
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111
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Cause of stale DNS records
There is a domain name (for example, example.com) that uses Register.com as its domain registrar and uses Register.com's name servers (let's say dns1xx.register.com and dns1xy.register.com). The ...
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36
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configuring Wordpress on azure app service to avoid canonical issues
I am a non programmer and am looking to host an educational site using word press on Azure app services with azure front door. I learnt about canonical issues and wanted to ensure that the following ...
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98
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How to make a pdns recursor make requests to several dns servers
Good day to all.
At the moment, our company has a Windows DNS server that serves the test.local zone, we wanted to smoothly switch to powerDNS. At the moment, there is a need for the pdns recursor, ...
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1
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127
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What do I need to configure reverse DNS?
I've set up PTR record on the DNS server of our organisation. Reverse lookup works on our network, but from a different network, it does not work.
It seems to me that something needs to be done on the ...
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118
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How to get dns name from upstream block of nginx conf
I am trying to implement a load balancer based on the health check.
If one of the cluster ingress goes down it has to routed to the other cluster ingress.
I did the following
upstream backend {
...
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1
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175
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Unable to Resolve DNS for api.huggingface.co on Ubuntu 24.04 - Node.js Application Issue
I'm working on a Node.js application hosted on Ubuntu 24.04, integrating with Hugging Face's API for fine-tuning models. However, I’ve encountered a persistent DNS resolution issue when trying to ...
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113
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Cert-Manager fails renewal of certificates with "SERVFAIL"
I am running a small K3S cluster and I use Cert-Manager to issue Let's Encrypt certificates to the applications running in my cluster.
The cluster was installed via Ansible and the initial generation ...
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46
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DNS: solution to provide response based of source AS number?
I need to dynamically serve DNS responses based on the source IP address Autonomous System (AS) number.
My current
setup uses Cloudflare as a DNS-only provider. Due to network
restrictions, I need to ...
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3
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How to find domains that have IP address 142.251.211.234 defined, belonging to a google API?
I'm searching for domains that own IP addresses that I'm seeing traffic to in my GCP network, in order to configure a firewall rule for that specific domain.
For 142.251.211.234, I know it's a Google ...
google-cloud-platform
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36
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Bind9: can support forward but modify domain name?
For example:
I want
domain a.b.region1.example.net forward to 10.0.0.1 and change domain name to a.b.example.com
domain a.b.region2.example.net forward to 10.0.1.1 and change domain name to a.b....
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53
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iptables allowing outbound traffic when it should forbidden ... via loopback?
My iptables config is supposed to allow localhost traffic, allow ssh traffic (port 22), allow icmp traffic in both direction, and block everything else.
However, in practice outbound traffic still ...
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2
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168
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Do I also need ipv6 DNS in /etc/resolv.conf?
On RockyLinux 9.x, AlmaLinux 9.x, etc
I specify the nameservers to be added to /etc/resolv.conf by these 2 commands:
nmcli con mod "System eth0" ipv4.dns "8.8.8.8 8.8.4.4 9.9.9.9"
...
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220
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PowerDNS issue with reverse DNS for IPv6
I'm setting up reverse DNS for IPv6 using PowerDNS and could use some assistance with a configuration issue.
I successfully created the reverse DNS zone and added a PTR record, but the record is not ...
2
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1
answer
508
views
What does the error message ""No internal type for both IPv4 and IPv6 Addresses" (A+AAAA) records available for <address.domain>" mean?
What does this error message from nslookup on Windows (10) mean?
"No internal type for both IPv4 and IPv6 Addresses (A+AAAA) records available for internalname.internaldomain.tld"
Googling ...
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85
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How do you make an nmcli command run automatically on startup?
I have a linux mint server that I use as a media server. It reboots very infrequently, but when it does, the DNS only resolves ipv6 addresses. Something in the configuration is weird, and ping, curl ...
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1
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46
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Faulty SOA entry is cached at service provider DNS servers after domain suspension
Our company transferred a .com domain to a different domain provider. This worked just fine for 14 days, but today our domain was suspended, because we had a problem with our mail provider and didn't ...
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0
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56
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Fresh Debian 12 (Bookworm) netinstall, no (more) internet
Installed the Debian OS ok, then manually installed some 3-4 GB of kde-standard over the ethernet just fine; booted into it and, surprise! internet not working
root@kellian:/home/kellogs# ip a
1: lo: &...
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2
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106
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Unable to use our PowerDNS Nameservers with GoDaddy domains - Error message: "nameserver isn't registered"
We are https://elitedomains.de/, a German domain provider offering nameservers for our customers to use with external domains as well. However, we have encountered an issue when trying to use our ...
0
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1
answer
22
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If I downgrade my DMARC policy in the future, will it have bad effect on deliverability?
I have a domain that is not being used to send email, and so I was planning to just set the DMARC policy to "p=reject", remove everything from the SPF record, etc, to encourage recipients to ...
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0
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69
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Requirements for enabling DNSSEC in Split-Brain Bind9 DNS under a child zone?
I have a fairly complicated split-brain DNS setup, and I'm hoping to add DNSSEC to the ecosystem to support SSHFP (which requires DNSSEC). I am not totally sure I understand how this needs to work, ...
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52
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DNS could not resolve selected hosts only
I have a problem on all machines in the network resolving specifically analytics.google.com host. I should state that every other host resolution works fine. I've tried using multiple different DNS ...
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