DNS stands for the Domain Name System, a hierarchical, distributed database where the keys are domain names.

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Google Domains: Dynamic DNS

Google Domains support Dynamic DNS. That is great, as my domain and Dynamic DNS information can come from the same provider. For Dynamic DNS to work, I usually need the following info: Update URL ...
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15 views

Domain randomly becomes unresolved

Recently, I've been having some issues with a domain name. I set up my domain to point to my server, but every now and then, when attempting to ssh in, I get the error: ssh: Could not resolve ...
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2answers
19 views

Adding client computers to an active directory domain controller

After facing a hell of a problem with adding a client computer to a domain controller, i followed the answer i got on this site and used my server's IP address as the preferred DNS on the clients ...
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1answer
17 views

Transparent user migration to a new file server - just changing DNS?

So, file server migration. I've robocopied everything over and kept folder permissions intact, I have recreated the shared. My question is I need a transparent way of switching all the users from ...
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1answer
49 views

Need help to set DNS record

I am having some problem to set up he DNS configuration of my domain name. Below is the image of the current DNS configuration. I bought my domain from godaddy, registered at afraid.org for using ...
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1answer
27 views

Is a DNS Lookup performed in this case?

Sorry for this noob question in advance :-) When I enter a dedicated IP of a web server in the browser instead of a domain name, then as far as I know my computer does not need to perform a DNS ...
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1answer
37 views

How to make Thunderbird use Exim4 as SMTP?

I have one Exim4 server, and I configured it followed this website: https://technpol.wordpress.com/2013/03/09/part-three-configuring-exim-to-accept-and-deliver-mail-and-for-secure-outbound-smtp-mail/ ...
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1answer
18 views

Can I redirect to other subdirectory of another site with CloudFlare [on hold]

I use CloudFlare as DNS and want to point one of my site say productA.com to my main site my-main-site.com/productA. Is this possible with CloudFlare?
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1answer
41 views

How to deploy separate DNS server for email filtering

I'm looking to install Vamsoft ORF as a spam filter for my domain. Looking at the Deployment Guide I've noted the following statements regarding DNS. The server should not be the same DNS server ...
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2answers
18 views

Can I use SRV to receive mail on port 2525 ? How must I configure it in my DNS? [duplicate]

Is it possible to use a SRV rule on my DNS to receive mail on port 2525 instead of port 25 ? If it is possible how can I setup this rule correctly ?
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2answers
31 views

Rewrite in Nginx Does not work for POST request

I have two VPS(one is for fail over), both running Nginx as a Load balancer for backend servers. Also, I have Enabled and configured SSL for my domain(registered on GoDaddy.com) on Nginx. Since I am ...
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2answers
41 views

DNS Name Server Caching

I am trying to figure out a few things about DNS Client caching. Specifically, I'd like to know how many name servers for a particular domain are cached when the client resolves a record for the ...
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0answers
18 views

How to setup Linux DNS server for Azure VMs in virtual network?

I'm trying to use Linux Bind9 to set up a DNS server for my Azure VMs in virtual network. I got one web server and one mail server. My goal is making GoDaddy connect to my own DNS server, and redirect ...
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0answers
18 views

Web server opens old index file in a strange way

PC: Old desktop PC, OS: Ubuntu LTS (latest), Web Server: Using Apache (latest), FTP: Gadmin PROFTPD, DNS: Using NOIP, Also using the NOIP dynamic update client, in my var/www/html I kept an ...
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1answer
79 views

MS Terminal Server Blocking Website Access

We are trying to access a company website from within the local terminal server client. The website is hosted elsewhere. Previously they had DNS rules in a separate File/DNS server which I deleted ...
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2answers
42 views

an active directory domain controller could not be contacted

After creating an active directory domain controller i tried to add client computers to the domain i kept hitting a snag. The following error occurred when DNS was queried for the service location ...
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2answers
80 views

Can browse, but can't ping

I am behind a corporate network. I am unable to use git, since it can't resolve server names fatal: Unable to look up someserver.org (port 9418) (No such host is known. ) I can't ping that server ...
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0answers
21 views

How can a host connect to a domain if the domain address changes and the entry is still cached? [migrated]

First of all, I'm sorry if this isn't the correct place where to ask. I'm studying the dns system and when I got to dns cache I started wondering how could a host reach a cached domain if the domain ...
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2answers
32 views

where should I point my top level domain DNS for Internal Active Direcotry Services

We are planning to switch our environment from workgroup to domain (active Directory services). We are planning to register our top domain at some public register. That domain is going to be used just ...
2
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2answers
53 views

How to set hostname if hosting multiple servers on the same machine?

I'm learning about setting up my own web and mail servers, and I've been confused about this question for days, and articles online (including Server Fault) seems to be so inconsistent with their use ...
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0answers
10 views

Setting up SRV records for Minecraft With Cloudflare [migrated]

I cant seem to be able to setup SRV records for my minecraft server on cloudflare. I have all my name servers right. Ill show a screenshot of what im doing ...
0
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2answers
30 views

How to serve custom dns to dhcp clients in openWrt? [on hold]

I would like to serve custom DNS server to dhcp clients. How I can achieve that in openWrt?
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1answer
30 views

An “A” record not always working

I have a TeamSpeak server on ts3.example.com. Within the cPanel of example.com I have added an A record that points to the IP of the teamspeak server (excluding the port of course). This pointing ...
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1answer
24 views

Planning internal DNS

I am planning a new DNS names structure inside of our corporate network. We have external registered DNS name (e.g. example.com) and internal-only not existing name (e.g. exampleinternal.local). ...
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22 views

Tell bind to resend notify?

Is there a way to tell bind to resend notify packets to secondary/slave zones after (say) a minute? This is for an unstable connection where some UDP packets get lost and also to compensate for the ...
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1answer
27 views

How to set up email forward via DNS

We currently have old_domain.com as the primary domain in google mail and new_domain.com as an alias. We want to change new_domain.com to the primary domain. Unfortunately google has a 24 hour lock on ...
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21 views

Internal to External hosted site [duplicate]

REPOST >> UPDATED I have recently moved a website to another host and am having problems. We have: - new.site.com - www.site.com www.site.com is the one that was recently moved, new.site.com needs ...
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1answer
25 views

Website hosting moved from internal to external, issues

First I would like to let you know that I've researched this problem and I have seen similar questions on other sites, but I am VERY inexperienced when it comes to things like this so I really don't ...
48
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6answers
3k views

Why can't MX records point to an IP address?

I understand you should not point a MX record at an IP address directly, but should instead point it to an A record, which, in turns, points to the IP address of your mail server. But, in principle, ...
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1answer
39 views

What is the minimal possible bind configuration that works?

I have been trying to make bind work on Fedora 21, and haven't succeeded doing it. I read a few tutorials which basically instructed me to create a zone for my domain and an inverse mapper, then ...
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2answers
40 views

How does a client get the zone file?

I understand the role of a NS record, but what I don't understand is how a client (e.g. my computer) get the NS record in the first place? Please help me fill in the gap: I want abc.com I ask ??? ...
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1answer
23 views

What is the difference between -all and ~all in a DNS SPF record? [duplicate]

I've found that our current DNS SPF record uses the ~all keyword, but in most examples I've seen -all used. What's the difference between the two?
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29 views

DNS - Multiple MX records not working for a single domain

I have one domain, let's call it example.com with 2 MX records. The first record points to my on site Exchange 2013 server with a priority of zero, making it the preferred server. The second record ...
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2answers
58 views

Are “Glue” records in DNS used only by nameservers of the same domain?

I am bit confused with where "Glue record" is used in DNS. This documents say If you are using someone else's name servers (eg. your ISP's), you won't need to worry about glue records. You ...
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1answer
35 views

Windows Server 2012: DHCP: Android Clients have no access to the internet

I am using a Windows Server 2012 R2 as Domain Controller, DHCP Server, DNS in my network. My Router is the gateway which is connected to the DSL modem. Some Clients (all android devices) and the ...
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1answer
46 views

Changed the DNS settigs A name records a week ago. Still resolving to old server on one computer? [closed]

I migrated a website and changed the DNS settigs A name records a week ago, but it is still resolving to the old server on one computer. Testing with my computer, my phone on 3g and a friends phone ...
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0answers
18 views

set in all dns answer same IP adders plus real [closed]

I would like to configure a nameserver (ubuntu(bind 9 or pdnsd) that will return the same IP address ("A" record) for any arbitrary host name and adding the real ip addresses. For example: ...
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13 views

PDNS forward zone subdomains only

I am trying to use zone forwarding, but only for subdomains. Imagine that you have an VPN server at the domain vpn.provider.tld. This domain is pointing to an global IP address, accessible from the ...
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0answers
17 views

How domain provider's DNS name server entries work? [migrated]

Scenario: You buy domain abc.com from provider XYZ. You want to host your own DNS server on example.com (on ns1.example.com ns2.example.com). The domain and both subdomains will point to same IP. XYZ ...
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0answers
10 views

jetty virtual hosts on LAN [closed]

I have a question about virtual host name on jetty (embedded), let's imagine I want to create a virtual host named www.buzzo.com visible from all nodes of my LAN, and I don't want to edit any windows ...
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1answer
57 views

TTL and Google DNS

I've found a similar post about this, however my user can't comment. I wonder why doing dig @8.8.8.8 domain.com prints out different "countdowns" when running it several times in few seconds, as if ...
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0answers
3 views

Debian Network-manager, how is the steps of connections to a captive portal [closed]

now a few days ago I'm looking how the network-manager works to automatically open to the browser when connected to a captive portal. I know Windows and Apple need to have their own domain hosted ...
0
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1answer
45 views

How to set up an internal domain with Route53 on AWS?

I have a VPC on Amazon. Currently, it's running bind9 on one of the servers. It has records like this: build IN A 172.aa.bb.cc dev IN A 172.xx.yy.zz This ...
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2answers
70 views

Different subdomains, apache responding with the same vhost

I have a VPS in Digital Ocean, running ubuntu 14.04 and apache 2.4.7, DNS is also managed in DO. I have one domain let's call it thedomain.com I've been trying to configure 3 subdomains along with ...
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0answers
12 views

Domain attached file server not authenticating with DC

I have 2 servers: Domain controller (Windows server 2012 std) - 192.168.1.2 Name dcsrv01 File server (Windows server 2012 std) - 192.168.2.2 Name fsrv01 The file server is domain attached. The two ...
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1answer
78 views

AWS route 53: If I want to use external server do I need to change SOA & NS records?

If I want to point to a server not in AWS, Do I need to change the SOA & NS records that are created automatically (by route 53) ? Thanks Rafael.
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1answer
18 views

Setting up two Bind9 DNS Servers on LAN with one serving a particular zone and the other hinting to it

I have set up a Bind9 DNS to serve names on a local netword 172.16.0.0/16. This Bind9 DNS service works fine and resides on 172.16.0.4. It serves names in the domain "mydomain.mak" correctly to all ...
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1answer
17 views

Is it required to keep DNSSEC zone fresh?

I've found the following guide on how to setup DNSSEC with NSD DNS server and ldns utilities: https://www.digitalocean.com/community/tutorials/how-to-set-up-dnssec-on-an-nsd-nameserver-on-ubuntu-14-04 ...
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1answer
34 views

Trying to set up port forwarding for multiple subdomains using SRV and DNS

I am working on a startup and trying to keep my expenses low. I'm hosting four servers in my closet with a single static IP address. I want to be able to reach each server over ports 80 (HTTP), 443 ...
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0answers
15 views

Domain name redirection for wildcard domains (pref ALL possible domain names) [closed]

im trying to setup a redirection towards an app that im writing in Java. This app opens a port 8443 on my laptop (which is a MacOS 10.10 Yosemite) and offers a HTTPS service. The big plan is to have ...