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)

Filter by
Sorted by
Tagged with
0
votes
0answers
13 views

Azure Active Directory Domain Services (AADDS) DNS Outages

We currently make use of the Azure Active Directory Domain Services (AADDS) as the domain for our Azure hosted Virtual Machines. Every so often, we experience domain services failures, related to DNS ...
0
votes
0answers
21 views

How to redirect multiple subdomains through gateway server to internal app server with single IP address on different ports for each subdomain?

I am having a problem with trying to redirect subdomain url to a Application server that have apps on different ports but a single IP address. Basically, here are the steps: Client outside the network ...
0
votes
1answer
21 views

Do the tld name servers cache the authoritative name servers? For how long?

When I specify the nameserver for a domain in the registrar console I use the nameserver name. Let's say I change the ip of the nameserver. How long would that change take to propagate?
-2
votes
3answers
30 views

using a dynamic dns as a name server [closed]

I'm playing with hosting my own website on a residential internet connection. I have a dynamic ip assigned but the isp also gives me a dynamic dns domain name, something like xxx.go.ro . I bought a ...
0
votes
0answers
28 views

Emails are getting blocked while sending from gmail and outlook to Postfix email server

I have configured a Postfix email server on centos with the combination of dovecot and SquirrelMail on AWS EC2 instance. My emails were working perfectly. I was receiving the emails from outside and ...
0
votes
0answers
48 views

Setting up a client to use a local DNS server

I have an Ubuntu Server (20.04) (SERVER) on which I'm running dnsmasq. This machine has a local IP of SERVERADDRESS I have a Macbook Pro (CLIENT) on the same network - and I updated the DNS rules on ...
-2
votes
0answers
29 views

SRV record on AWS

this is my first post, please be nice I'm trying to create a SRV record on AWS Route 53, to use service.example.com instead of service.example.com:8081, because this address already has a service on ...
-1
votes
0answers
14 views

How would I correctly configure my Centos Web Panel Server to receive dns requests from godaddy to my external IP? [closed]

I have a few domains through godaddy, and I am tired of paying hosting so I am going through the process of hosting my own simple server. I have successfully installed a machine running CentOS7 with ...
1
vote
3answers
90 views

Can the IP address of a root nameserver change?

This is a question about DNS root nameservers. In order to resolve DNS queries, to obtain nameservers for the first stage of the process, the root nameservers must be consulted. There are 13 and the ...
-1
votes
2answers
129 views

AWS SOA record from AWS to Cloudflare

I purchase a domain with AWS to try it out and edited the NS records with CloudFlare records, but I also have another entry for SOA, this is it: Record type SOA – Start of authority record ns-501....
-1
votes
1answer
44 views

Redirect all traffic through my Raspberry PI

I have a Raspberry PI 4B that is doing DNS (PiHole+Bind9), DHCP, Wireguard, ... The RPi is on 192.168.1.2 and it hands out 192.168.1.1 (router) as the default gateway for internet traffic. My ...
-1
votes
0answers
29 views

Google and Outlook Blocking my Mail server IP

I have configured a Postfix mail server combining with dovecot and Squirrelmail on AWS EC2 Centos cloud. I am perfectly receiving all the emails from external accounts like outlook, gmail, and yahoo, ...
-1
votes
0answers
23 views

Unable to resolve one website in particular (that we know of)

The website is www.lhg-bookagroup.com, I know it works because I tested on my phone and Google public DNS, and downforeveryoneojustme It does not work for anyone here (1000+ computers). We have an AD ...
1
vote
0answers
13 views

Server2019 “rpc_s_server_unavailable 1722” Error

I have a new domain and servers are running on Server2019. I am trying to run a script to edit dns records on DC from another server. But I face with the the error above. I checked the solution tips ...
0
votes
1answer
39 views

Different email addresses of same email server for sending and receiving

I am actually a fresher in terms of configuring an email server. Recently I configured a Postfix email server combining with dovecot and squirrelmail on AWS EC2 centos server, following this guide: ...

15 30 50 per page
1
2 3 4 5
752