The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names.

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1answer
11 views

Glue record not working… sort of

I am trying to set up my VPS with DNS. My ip is 89.34.27.101 . The domain I'm trying to register at is http://marbleblastultra.tk . I've registered glue records and put the A record into my Control ...
0
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0answers
7 views

SQL server is replicating to wrong subscriber

I have a publication which is intended to push data to a subscriber over the internet from a remote server to our onsite local subscriber but it ends up on a wrong subscriber.Here is the scenario: ...
1
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0answers
10 views

Unreliable internal DNS record lookup with Windows Server 2012 R2

I am working on an Active Directory domain with a single DC running Windows Server 2012 R2. The DC is set up as a DNS server (amongst other roles), and forwards to our ISP's name servers. The gateway ...
-7
votes
1answer
23 views

How to use dig to send DNS queries to servers of interest directly? (not through my local DNS resolver) [on hold]

How can I use dig to send a dns query to servers directly? (not through local DNS resolver).
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1answer
19 views

Performing DNS queries starting with one of the root servers using dig command [on hold]

I am having trouble understanding the question for my network assignment. The question states: Discover the sequence of DNS servers your local DNS server with empty cache goes through when it ...
13
votes
6answers
3k views

Why would a university block incoming UDP traffic with destination port 53?

From my understanding DNS uses UDP and port 53. What undesirable things could happen if incoming UDP packets to port number 53 weren't blocked? UPDATE: Packets originate or are destined to the ...
0
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0answers
25 views

Why do I get a list of root name servers when doing an nslookup to one nameserver and not another

I have two bind9 servers, ns1 and ns2 I have a test domain called test.test whos apex is 1.3.3.7 When I nslookup ns1 (master) I get: nslookup test.test ns1.domain.com (root) nameserver = ...
0
votes
4answers
54 views

Internal DNS for internet access

I have configured a internal DNS for my office network using BIND on CentOS6 ... The problem I am having that when I use that DNS server as a primary DNS my entire network loses internet connectivity ...
-1
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0answers
26 views

Webserver & Mailserver as DNS master-slave [on hold]

I have two servers, a webserver and mailserver. Each is running CentOS webpanel and has dns zone/records generated when I add domains. I am looking to merge all dns records and share them across both ...
-2
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0answers
27 views

Add New DC on Different domain

We have acquired an organisation with Vpn tunnel we are able to access each others network in a few days we are going to establish trust relationship But before that we are going to install a ...
0
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1answer
27 views

IIS host header name resolution across my network

I have a Windows Server 2012 R2 machine, named [mine-1234]. I have IIS 8.5 installed and a hole in my firewall for ports 80 and 443. I have created 2 test sites one with a default binding to :80 ...
0
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0answers
9 views

Five Questions about Specific Examples of Sender Policy Frameworks (SPF) [duplicate]

I have spent some time learning about SPF and have five questions based on specific SPF policies. I obtained the SPF data via http://www.kitterman.com/spf/validate.html In advance, many thanks for ...
0
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1answer
28 views

Windows server 2003 DNS Issue. I cannot open a specific external website from internal Domain

Our public website was hacked and Google blacklisted it. We have fixed and it's visible for the public. This morning I wanted to see the site from our internal domain and I couldn't open it. Chrome ...
-1
votes
0answers
12 views

Domain points to wrong account [on hold]

I have some trouble with my server. first, i had a main domain mydomain.com and a second mydomain.net which was parked on mydomain.com. Now i try to have a own account for mydomain.net but it ...
0
votes
0answers
34 views

Cant sent mail from own server to google

I'm running a mail server and I'm having problem with sending mails to google. Mails to other providers work fine. I guess its maybe related to my DNS settings, as I've read that google is quite ...
0
votes
3answers
63 views

Can I Run My Web Service and DNS Service on the Same Server?

I am quite new about Linux. I wonder if I could run DNS and Web Server on the same server? The reason is I have a server which they want me to set it up as a DNS & RevDNS server with the ...
0
votes
1answer
28 views

Prevent Alias From Converting Domain Name in Browser Address Field

I'm using Amazon Web Services. I've set up my domain name in Route 53, set up static website hosting in S3, and I've successfully mapped the domain name to the S3 bucket using a DNS ALIAS record set. ...
0
votes
1answer
22 views

How do I host a registered domain with bind9?

I'm already hosting my own web server, FTP, etc. and I want to be able to link my domain name myself directly instead of configuring all subdomains and redirections on the registrar's DNS. Is it ...
-2
votes
0answers
10 views

Setting up own domain (with Django and Apache2)

I am running a website on a VPS using apache2 and Django on Debian. I felt as if it would be fun to give it its own domain instead of just using the IP, which works fine. After purchasing one, I ...
-1
votes
0answers
5 views

How to serve content from another domain on a local sub folder

I have a nodejs express website hosted on heroku. I want to have a sub folder such as example.com/blog mapped to blog.sample.com. I don't want to do a URL forward. I want the url to stay ...
0
votes
0answers
16 views

Active Directory DDNS update with a DNS Hidden Master

Active Directory queries DNS server for a SOA(master DNS) record before sending out Dynamic DNS updates to the master DNS. Would AD still work if we set up a hidden master for DNS ? Usually Hidden ...
2
votes
1answer
29 views

Why do authoritative and cached names servers return different records for ANY type?

Why do the DNS records authoritative name servers frequently give different results than cached name servers if "ANY" records are requested? The authoritative name servers seem to consistently ...
-3
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0answers
12 views

I have server 2008 r2 & suddenly gpo starting giving error to give access in all accounts & repeatedly disables the Administrator account also

I have server 2008 r2 & suddenly gpo starting giving error to give access in all accounts & repeatedly disables the Administrator account also, any suggestions ? Thanks in advance...
-1
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0answers
16 views

Server request timeout? [closed]

I just setup zPanel on my server (an install of Apache, PHP, MySQL, etc). I set up a domain to point to the server IP and gave that to the installer. Though, now when I try to access or even ping the ...
0
votes
1answer
64 views

What happens when two DNS zones intersect on the same server?

I have a DNS zone of example.com with a record of type A defined for foo.example.com. On that same server, I have another zone named foo.example.com with and no A record defined at the top of the ...
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0answers
27 views

Cannot change Nameservers to cloudflare

I have a domain but I can't change its nameservers to point Cloudflare's. I've been told that the NIC is rejecting them (it's a ccTLD), literally "your nameservers are not authoritative for that ...
-2
votes
0answers
29 views

SRV record with cname [on hold]

I bought an hosted service which, mainly for DDoS mitigation reasons, often rotates its IPs. So myservice.remoteserver.xxx:666 sometimes goes either to 111.111.111.111:666 or 222.222.222.222:666 I ...
1
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2answers
29 views

How to Point DNS to Machine Behind Router

I purchased a domain on namecheap (lets just use www.example.com). I have a CentOS virtual machine with a bridged adapter on my LAN. I'd my domain to resolve to that CentOS machine, but I don't know ...
1
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0answers
21 views

In a BIND.. Weird DNS issue

I have now somehow replicated a weird issue with one of my DNS zones on two different servers and with two different versions of ISC BIND. I have a sub-domain delegated to my server. The first time ...
0
votes
0answers
6 views

Syncing multiple Plesk instance/server DNS entries [closed]

I have two servers, one in the US and one in France both running Plesk Control Panel. I'm no stranger to SSH and manual administration, I just can't hand off a chrooted ssh to my clients and expect ...
1
vote
2answers
41 views

Powershell Passing Funtion Varible for System.Net.DNS

Recently I have been working on trying to parse thru a series of servers for DNS information. I can't seem to correctly pass the variable to the function. Calling the function by itself and passing ...
0
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0answers
5 views

How to remove my former sites off search engines? [migrated]

I have this little problem. A few years ago, I had couple of sites, then I closed them. But back then the search engines added those sites of mine into their databases. It's Google and Chinese Baidu. ...
0
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0answers
15 views

Point subdomain to localhost server? Nameservers pointed elsewhere

My client has their nameservers pointed to another server (Server A) for their current website. However, in the zone file all the IP's point to the local host server (Server B). While Server A ...
0
votes
1answer
19 views

Azure VM Unwanted User-Agent Filtering/Blocking

I recently migrated our WP site to a Debian 8 VM running on Azure. Since then, we are unable to process credit card payments through the RedSys payment gateway. It seems that upon successful payment, ...
-1
votes
0answers
43 views

For Windows Server 2012 R2 do you need to install DNS or have a DNSS to use WDS?

I was just wondering if you actually need a DNS to use WDS and if so why? I am kind of new to Windows Server and any explanation would be greatly appreciated Thank you
-3
votes
0answers
28 views

Emails getting rejected SPF [on hold]

I am having issues receiving confirmation emails from a website that I use which is built in laravel. When I checked my mail logs it appears to be getting rejected due to "SPF IP is not allowed to ...
3
votes
0answers
53 views

How does Windows decides which DNS Server to use when resolving names and connected to a VPN

When connected to a VPN network how does the windows DNS client choose a prefered DNS server, between the DNS servers configured for the local connection and the server statically defined for the VPN? ...
-1
votes
1answer
65 views

Windows Server 2012 R2 DNS internal and external records issue

I am running into an issue with with DNS on Windows Server 2012 R2 acting as Active Directory domain controller AND DNS server I want to be able to setup certain records that will resolve internally ...
-1
votes
2answers
51 views

Namecheap DNS Cname issue

I am using Namecheap default DNS, where I bought the dns name. However, I am having a issue... Typically, for AWS and Rackspace I would have: A Record: foo.com 124.22.22.1 Cname: www.example.com ...
0
votes
2answers
29 views

FQDN, DNS, Hosts, postfix

Let's say I bought this domain: example.com Name servers under DNS manager all points to example.com That subdomain(example.com) of nameservers points to an IP. Also, note that hostname unique is ...
0
votes
0answers
38 views

How do I setup a “subdomain empty” DNS CNAME?

I am hosting a webserver with about 200 domains. The DNS records of those domains are a simple CNAME record of the form: *.domain1.com. CNAME myhostingserver.mydomain.com. *.domain2.com. CNAME ...
1
vote
1answer
43 views

Configure bind9 to forward queries as-is and to reply answers as-is, or in search of perferct forwarder

I use bind9 server (A.A.A.A) as forwarder only: queries are forwarded to other DNS server (B.B.B.B). I manually ask B.B.B.B to resolve domain and got correct result: $ dig a downloadcenter.intel.com ...
2
votes
2answers
47 views

Should we allow DNS zone transfer to root-servers and parents zone NS servers?

I never found any reference to this in example set-ups, including those from the Bind ARM. Nevertheless, I noticed my authoritative server received transfer requests from IPs — not their names ...
0
votes
3answers
40 views

iptables rules for port 53 not taking effect

My ubuntu 14.04 LTS server is receiving lots of incoming traffic on port 53 from different ip addresses. I am not hosting any DNS service. So I decided to block port 53: iptables -A INPUT -p tcp ...
0
votes
0answers
27 views

What does it means to send DNS zones?

I have a domain registered at a provider (let's call it DomainSeller). I have a website hosted with another provider (let's call it WebsiteSeller). I wanted to link my domain name to my website. I ...
0
votes
0answers
14 views

How to access Mesos DNS running on VM from host

I have a host machine (Mac OS X 10.11.1) running virtual machines through vagrant. I installed Mesos DNS on one of the nodes, and modified resolv.conf on other cluster nodes, so I can successfully use ...
5
votes
1answer
193 views

Should I put Scope:Link or scope:Global IPv6 address in DNS AAAA record?

I have a mail server for which I need to create the AAAA DNS record and update the SPF record to include its IPv6 address. An ifconfig command shows a Scope:Link IPv6 address and a Scope:Global IPv6 ...
0
votes
1answer
48 views

Cannot Join Client Computer to Server Domain (Windows Server 2012 r2)?

I'm having trouble with trying to join my client computer to the server domain. My client is Windows 7 Professional and the server domain OS is Windows Server 2012 R2 Standard. I tried the usual ...
0
votes
1answer
27 views

DNS A record with only primary/secondary nameserver options?

I just bought a domain through a domain service and they give me the following options for editing DNS records: I'm trying to set up branded bit.ly forwarding on the domain, which asks me to set my ...
2
votes
1answer
16 views

How to properly configure a classless reverse zone in BIND 9

I'm trying to configure reverse DNS for a sub Class C block. My ISP has delegated 128/25.2.0.192.in-addr.arpa. I've spent a good few hours reading everything I can find on classless reverse map ...