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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)

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DKIM public key & DKIM from DNS are the same but don't match because of spacing

Please take a look at this picture of mail-tester.com saying that Your DKIM signature is not valid. As you can see, the DKIM signature and public key are identical in term of text (characters) but ...
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1answer
17 views

Get-DnsServerForwarder in WinSrv2012R2

Can anyone tell me why when I execute this Powershel cmdlet I can see a DNS forwarder that I inserted earlier (also using PS) but I can't see it on the DNS management console? PS C:\Users\...
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1answer
25 views

External DNS to manage Domain // Ways to test the own external DNS server

i have several domains at Strato. I want set up my own external DNS to manage my domains. To do this at Strato I used the option "Domainverwaltung: NS-Records ändern". I had to provide 2 Nameservers ...
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26 views

How does domain registration happens in practice? [on hold]

I'm not sure about how the process of domain registration actually takes place in practice. I'll try to ask through an example. Assuming: registrar.com is a partner of VeriSign, which administrates ...
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0answers
25 views

Domain Name not Pointing at Server [on hold]

I own the name Gitship.com. I have configured it with my DigitalOcean droplet and set up the DNS records. However, when I navigate to the site, it returns the following domain: http://wordpress-209295-...
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0answers
21 views

Painfully slow connection for only one virtualhost on my server

I have a client who has an extremely slow website on his GoDaddy account. I moved the site to my server, thinking it was his hosting plan. The site is ridiculously slow on my server, too. I thought ...
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1answer
51 views

Lets Encrypt ACME2 Challenge NameCheap Personal DNS

I'm trying to get a wildcard certificate, but running into the issue that I use Namecheap as a registrar, and for API access I need to spend more money than I'm willing to, so I'm looking for ...
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1answer
14 views

How could I have a specific page/subdomain point to a specific port/app?

I have a domain registered and the A record is pointing to my network. I run a plex server and I have made it so I can access some tools remotely like Sonarr and Radarr. Sonarr listens to a specific ...
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0answers
32 views

DNS server is publishing private IP in Public Network [on hold]

Currently our authoritative DNS server publish internal IP addresses to the open internet.  need to have our DNS servers modified such that internal 10.x.x.x IP's are not published to the open ...
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1answer
40 views

DNS TTL authoritative vs non-authoritative

I'm confused about the responses I'm getting doing a DNS query using authoritative vs non-authoritative and I'd appreciate you can help clarify. When I query www.google.com using the authoritative ...
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0answers
6 views

create name server for subdomain on cpanel [closed]

I was wondering is this scenario possible or not let's say I have a subdomain with different hosting cpanel than main domain reseller.mydomain.com so here is the question: can I have something like ...
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Unbound DNS sever Logging ERROS [migrated]

I have recently started using unbound dns. i have configured all the things i need properly. But the server doesnt log when i make a query. Also i have no errors in the unbound.conf file The ...
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1answer
28 views

Redirect DNS to specific path

A given client needs to point a domain to my IP address. The problem is that when accessing through this subdomain it needs to "drop" at a certain URL. For example: sub.domainofmyclient.com => ...
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2answers
23 views

List all txt records for a doman

How can I list all the txt records for a domain? All online tools i checked only list the firt one they find and the nslookup the same. I wish to do this on a windows machine.
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2answers
22 views

Multiple SPF entries in same or separate TXT records

I want to use a mass mailing service, e.g. sendgrid, mailgun, etc. And so I must update my zone file to include the correct SPF records. Suppose my domain is example.com. My DNS provider ...
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2answers
2k views

DNS resolves wrong IP address in one country

One of my friend has an eLearning website based on Claroline. Two days ago, only Switzerland users started to get redirect "randomly" on another IP address when accessing the website domain. If I ...
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2answers
43 views

Updated DNS zone but still seeing incorrect records after TTL expiry

I completely re-installed a debian9-ispconfig3 server ks392200.kimsufi.com on its real IP 176.31.109.26 (That server was earlier installed on an IP FAILOVER 87.98.160.188 that I do not use anymore). ...
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0answers
42 views

Unbound dns log problems [closed]

I am working with unbound dns currently. Whenever I configure it it runs properly. But it never logs the queries I have given a log file And changed log-queries to yes And even taken ownership of ...
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1answer
46 views

How do you determine if the DNS server is authoritative

How do you determine if the DNS server is authoritative? For example,for 2008 DNS SERVER,if there is no cache,and the transponder is not configured,how can I determine which IP address to use when I ...
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3answers
43 views

Delegating only a third level zone (a.b.com) to cloudflare

I am in the process of trying out cloudflare. I host my own DNS (b.com), and I have created a distinct third level zone (a.b.com). I put glue records in the b.com zone and setup the a.b.com zone in ...
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2answers
403 views

Debugging DNS resolution error

I'm debugging a DNS resolution error for the domain auth.otc.t-systems.com with Cloudflare's server, but got stuck. The strange thing is that the lookup succeeds/fails depending on the machine that ...
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2answers
35 views

have a intenal dns and a external dns with the same domain.

is it possble to have an internal dns with all the internal ip like 192.168.0.0/24 for a domain and an external for the same domain. i want to have bind resolve all the internal address and if a ...
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2answers
29 views

Issue with running a Forward Proxy Container and DNS Server Container on the same host

This is a home experiment with Docker, pi-hole (container) and wormhole proxy (container) running on the same host. My docker host's OS is RHEL 7.x. My original intent is to learn more about pi-hole ...
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0answers
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unbound: inform_deny causing hangs (won't timeout) on iOS (safari & chrome)

I am running unbound and using a zone file to black hole certain adware domains. blackhole.zone looks like this: local-zone: "123freeavatars.com" inform_deny ...
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1answer
41 views

need htaccess to define wildcard subdomain for a wordpress multisite install

I've installed a WordPress Network using subdomains on an existing install, to make an english version of my current site (in french), but I get a 404 error on the new subdomain site. If I create a ...
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1answer
31 views

How can I prevent BIND from sending “Authoritative answers can be found from:”?

Here is an example from performing an nslookup from a Unix server (IPs and domains all fake): $ nslookup > set type=srv > _kerberos._tcp.example.com Server: 192.168.1.100 Address: ...
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1answer
23 views

Debian HA cluster with 3 servers, run script on outage for DNS failover

I am currently building a HA cluster, the database is already on Galera, the last thing would be, trigger an DNS update to redirect the traffic to another machine. Is there any software, which can ...
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1answer
45 views

NS or SOA causing issues intermittently?

My site always seems to be loading fine for me but I started receiving reports of some people not being able to connect to the site. It seems to be a DNS issue, but I can't isolate the problem. Some ...
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1answer
63 views

dnsmasq: one domain, half private, half public?

Our internal office network has the same top-level domain as our company online presence, e.g. ourdomain.com. For the outside world, any public hosts (eg. blog.ourdomain.com, download.ourdomain.com, ...
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1answer
42 views

subdomain causing lame server

i'm playing around with a DNS on localhost and i'm trying to add a subdomain but syslog reports it as a lame server. i've defined my subdomain in my .db file while as follows domain. IN SOA ns1....
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1answer
17 views

Samba Secondary DC,No DNS Forwarding

I'm new to Linux and testing Samba AD DC. I've set up 2 DCs. DC1 is able to resolve google.com, DC2 is not. nslookup google.com 192.168.0.100 Server: 192.168.0.100 Address: ...
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0answers
22 views

Dynamic DNS client records not being updated correctly

Our network is running Windows and macOS clients all of which are joined to Active Directory. The Macs are all running Windows via Bootcamp. We were having issues which were being caused by our macOS ...
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1answer
34 views

If I change a domain name's name servers will all DNS entries be maintained?

I'm working with a domain registered with GoDaddy. The client has a WiX website so in GoDaddy they've set custom nameservers to point to ns4.wixdns.net etc. We're deploying a new website on a ...
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0answers
17 views

Windows Server - Redirect Traffic To Another Subnet

on windows server 2012 I have 2 network cards, one of them connects directly to the router on static ip 192.168.1.11 and that second card I have a second ip set as 192.168.1.12. From the router I ...
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1answer
17 views

Using custom DNS in VPN to resolv domains to different server

What I have is simple but I got a VPN issue that I don't know how to solve. In general I want to route public domains differently within a VPN. See the current role of a Debian host: A public ...
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1answer
33 views

bind: loading from master file failed: file not found

So I'm kinda a newbie and I'm following this to connect a domain to my server. here is my codes: named.conf.options: acl "trusted" { 124.243.241.164; 124.243.241.164; 124.243....
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1answer
48 views

Active Directory - Nearly all DNS zones and entries are not created

This problem seems exactly the same as question 73875 albeit for a different version of windows and I've tried the accepted answer to no avail, it seems that in my case the problem is not transient ...
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0answers
29 views

Email Server Setup with VPS and Godaddy Domain

I am trying to set up an Email Server to send emails to all my clients/buyers at once and for this I have purchased a step-by-step guide from someone which I followed to set it up but unfortunately I ...
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1answer
40 views

SMTP Server All Records OK But All Email Sent in Spam

i bought a VPS with dedicated IP address and running windows Server 2012. I installed an SMTP server and DNS server, created all needed records: SPF, DMARC, DKIM, PTR, MX, and A. These results test ...
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2answers
75 views

Can a wildcard SSL certificate secure host names of various depths? [duplicate]

I discovered recently that my *.domain.com cannot be used on server1.apps.domain.com because it will only "wild" the one level, not two. The questions are thus twofold: Is there such a thing as a *.*...
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1answer
56 views

Error: SPF record must be in the correct format

I need some help with set up the SPF record. When I created the SPF record just like this: v=spf1 a mx include:_spf.google.com include:getresponse.com ~all When I run this for a test: https://...
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1answer
36 views

Is it possible to setup own DNS-server for company behind proxy? [closed]

I've got a general question about hosting own dns-server for the company behind a proxy-server (also hosted in the same network) and the ability to access them from outside these network. For ...
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0answers
34 views

Locally hosting an internal subdomain without duplicate record keeping

As part of the ground work for a testing environment (and a learning experience), I was given the task to come up with a best practice DNS concept that would allow us to simulate two SMB environments, ...
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2answers
85 views
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How can I duplicate incoming DNS packets and send them to a different nameserver with iptables?

EDIT: the tldr: I want to use TEE and NAT to clone UDP traffic. I'm not worried about handling responses. I ideally don't want to install new software. I am using TEE to send to local segment (127.0.0....
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1answer
27 views

All DCs fail DNS:RReg test, Reports SRV Records Missing on PDC - They are present

Background We are currently in the process of doing several Domain Controller upgrades. Before I started here a previous Admin had started the process of moving our DCs from 2008 R2 Standard to 2008 ...
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4answers
903 views

Moving many sites to new server - whats the quickest way to update their DNS records?

I'm planning on migrating a large-ish amount of websites (approx 100) to a new server and I'm in the migration planning process. A typical DNS zone for each website has two A records pointing to the ...
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1answer
21 views

Using different DNS server via different interface to resolve different domain name

My VM has 2 interfaces, eth1 & eth2 and I need to resolve 2 domain names *.abc.com and *.xzy.net For *.abc.com I want to use DNS server 1.1.1.1 via eth1 For *.xyz.net I want to use DNS server 2.2....
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0answers
19 views

DNS Edge Routing with LEDE/OpenWRT [duplicate]

I managed to setup a nameserver on a VM in a virtual subnet. All the machines in my LAN are Debian based. In order to get my laptop to use the local nameserver, I wrote out the following to /etc/...
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0answers
10 views

Webpack server and Express server with self signed cert works with localhost but not with IP

OS: MAC Env: DEV I've created two Self Signed Cert CN=localhost one for the webpack server and one for my express server. I've added the certs to the keychain, took me a while to get over this: ...
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0answers
32 views

OpenVPN client connection gets stuck at “Pre-connection initialization successful” after reboot in Linux Ubuntu 18

My OpenVPN client version 2.4.4 connection is getting stuck after reboot. It started stucking after I configured the OpenVPN Server to pass a list of DNS servers for the OpenVPN clients. I have ...