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

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Windows DNS Server Not Responding To Postini Cluster

First, a sordid story: My DNS server, for historical reasons, uses the Plesk Control Panel. I plan on migrating all of that server's duties to a new Windows server, without Plesk, so I told Plesk to ...
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573 views

How to host multiple websites on one shared server account

I'm using shared hosting on which I host a website and have got some "parked domains" (they show the same content as the master domain). I'd now like to catch those domains and show different content, ...
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212 views

WHM domain name swap, seamless transfer possible?

I have a domain (myDomain.com) that I use on my WHM account. I point my individual domain's to its name servers. ns1.myDomain.com ns2.myDomain.com I don't use myDomain.com at all and it's name ...
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294 views

associate dhcp requests with subdomains in dnsmasq

I have dnsmasq running as a dns server with a number of linux boxes using static ips that run several virtual hosts on subdomains. I currently have the following address line in my dnsmasq.conf to ...
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12 views

PHP FPM, chroot can't connect to AWS RDS

I've been experimenting with chroot'ing php-fpm pools via the built-in chroot method in php's pool config. This is for the purpose of hosting multiple wordpress websites on the same AWS EC2 instance. ...
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19 views

EC2 and Mailgun DNS setting

I'll preface this by saying I'm very much a newbie when it comes to servers, so please bear with me. I'm trying to configure an Amazon EC2 instance to allow me to send e-mail through Mailgun but I ...
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14 views

Unbound, exceptions to local-zone rules for specific subdomains and main domain

I have a simple rule to point my domain.tld to a local address 192.168.0.205. It takes everything; all subdomains *.domain.tld as well as the main domain itself. local-zone: "domain.tld." ...
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19 views

DHCPd updated through OMAPI does not update DNS

I am trying to get DDNS working using the following workflow: I have got one server where my python script is polling the IPAM database and sending the updated prefixes (only /32) to the DHCP ...
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38 views

opendkim-testkey: keys do not match

How do you produce the 'default._domainkey.drpedroazevedo.com' file? I deleted mine because my key expired and opendkim-keygen did not produce a new one as expected. mlr01 keys # ...
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16 views

Access pfSense reverse proxy sites from LAN

I've configured multiple webservers inside the reverse proxy package to redirect to a single servers, but on different ports. app1.mysite.com -> app.mysite.local:8000 app2.mysite.com -> ...
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33 views

`<domain> has no MX record` even though it's configured

I'm trying to set up a mailserver, but I'm stuck with configuring bind. I set the forwarders in /etc/bind/named.conf.options options { directory "/var/cache/bind"; forwarders { ...
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34 views

kinit won't connect to samba4 domain controller, cannot resolve hostname

i have set up a domain controller on my virtual machine. At first i will post all important configs, so you know what works already. Hostname: affenhirn2 Domain Name: example.affenhirn2.local (i am ...
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28 views

Vagrant DNS resolver and proxy

I have a couple of Vagrant boxes using Puppet provisioning and custom made Vagrantfile. They're all fine however with my custom WordPress box I've found serving pages takes about 20-30 secs! After ...
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32 views

Is it Safe to “Disable Recursion (also disables forwarders)” in a Standalone Lab?

In a standalone lab is it safe / appropriate to "Disable Recursion (also disables forwarders)"? (With recursion disabled, Microsoft Best Practices Analyzer reports, "The DNS Server must have root ...
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24 views

Ngrok custom hostname add cname to subdomain

I have xyzfoo.com domain. I created a DNS CNAME record which points to ngrok.com I have my app running locally on http://127.0.0.1:5000/ but not running remotely on zyxfoo.com Does a subdomain need ...
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80 views

Any suggestions on why DNS is failing over DrayTek 2820?

In recent weeks a weird problem has started in my office. The internet seems to stop working, but it has not failed, it's just DNS problems. Setup: ADSL2+ AnnexM connection via a Draytek Vigor 2820 ...
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17 views

Windows SBS 2008 - Registering remote VPN users in DNS

Our server runs Windows SBS 2008 and we're utilising Routing and Remote Access for VPN connectivity. Some of our remote VPN users have workstations which are attached to our domain. When these users ...
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53 views

Inconsistent DNS resolution behavior (dns_probe_finished_nxdomain)

I have a LAN with a windows server 2012 DC configured with DNS and DHCP. On occasion, clients will receive a dns_probe_finished_nxdomain error when browsing the web. This is not a consistent problem. ...
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38 views

GNU-Mailman, MS Exchange, and SPF

We are currently in the process of setting up GNU-Mailman to handle our customer mailing list. We have remote hosting (Hostgator Business Plan) for our website and for the GNU-Mailman install and we ...
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31 views

Exim mail not signing DKIM. Don't find whats wrong. (detailed description of steps taken)

I'd like to setup my fresh server (ubuntu) for hosting my www.bolleboos.be website and enable sending of email from my php scripts. So... I installed apache, php, mysql, ... and for the mail exim4 ...
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217 views

bind “can't find example: SERVFAIL”

I'm trying to setup a dns server on my LAN because my router doesn't support nat reflection and I have virtualhosts which require a domain (can't be reached by IP address) running on apache. I'm not ...
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42 views

How do I give each Virtual Host in Apache a domain name on a local network?

Background information. I have a server (running Debian Wheezy and Apache 2) at which I am to set up several Virtual Hosts to allow students to host their own website for development purpose. I am ...
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24 views

setting up DANE fails, error with “could not get cert chain from ssl”

I successfully setup DNSSEC and enabled it on my domain. I'd love to make use of my DANE. I created a standard self signed certificate openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem ...
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76 views

How to publish hostnames of Ubuntu machines using Avahi

How do you configure Avahi on Ubuntu to automatically broadcast and discover the DNS info for each Linux server on a local network? I've ran this on my localhost (hostname mylocalhost) and a test ...
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44 views

DHCP Server configuring

I've been configured DNS and DHCP on Windows Server 2012 correctly. But when I open the DHCP server from start menu and server manager, I get different result. When I run DHCP manager from server ...
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71 views

NetBIOS ping issues

I am having an issue with NetBIOS Pinging. When I ping a PC/Server on the network with its NetBIOS Name I am finding that the PC/Server is getting associated with an IP address outside my network (IP ...
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69 views

Docker debian slow dns resolve

I got terribly slow dns resolve inside my ubuntu when using wget or curl, apt-get,... root@815340a37f0e:/# time curl www.google.com ... real 0m5.132s user 0m0.006s sys 0m0.003s When I do ...
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31 views

my sub domains vanish with time

I have a server running bind9. When the propagation is done and i ping domain.tld i get xx.xx.xx.xx (where xx.xx.xx.xx is the server IP), if i ping test.domain.tld i get xx.xx.xx.xx, at this point ...
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24 views

Registering domain with NIC handle?

Many moons ago I was a system administrator for a small company. I vaguely remember that when I registered domains, they would be using a "handle" which I think was for me "BP897". My previous ...
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82 views

Internet drops out randomly for short periods of time (LAN issue)

I run a network (I'm just a math teacher) at my school. We get random 10 or so minute periods (I'd guess three a day on average) where the Internet is not accessible from within the LAN. If I go to ...
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21 views

geoipdns data update on the fly not working

I install geoipdns recently. It runs fine but it doesn't take new data updates correctly. Data updates should be made without restarting geoipdns, but it's not. I run the update with these steps: cp ...
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60 views

How can I redirect a domain name based on the source Region on Amazon EC2?

I have two web applications, one in Amazon's US-West-1 region and one in the US-East-1 region running on EC2. For the most part, they do the same thing, but they service different customers based on ...
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47 views

301 redirect DNS issues

I think I screwed up something in my DNS configuration and now its bugging me for hours. Any help would be greatly appreciated. I own a domain lets call it abc.com Before all the issues happened ...
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32 views

Issue getting DNS wild card A Record (*) working

I have a sub domain named subdomain under main domain named maindomain. Inside subdomain i have wild card (*) A Record that maps to a particular IP Address. This works fine and when i say ping ...
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50 views

Cannot connect via RDP/SMB via DNS?

We have a SBS (Windows Small Business Server) running DHCP and DNS. One of our VMs is a test VM. Due to security reasons, this VM is not inside the Domain and has no access to network drives etc. ...
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61 views

new dkim config -> opendkim-testkey: record not found

I am trying to set up dkim and I cannot get it to work or test properly, and I get the following error: opendkim-testkey -vvvv -d domain.com -s default opendkim-testkey: checking key ...
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45 views

Events ID 4013 For DNS and 1844 for Active Directory

I have newly registered a virtual private server (windows 2008 R2). My problem is when i install an Active Directory and DNS Roles, it raises events 4013 for DNS and 1844 for Active Directory. What ...
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47 views

Oracle GNS (Grid Naming Service) Breaks DNS

Am running a 2-node Oracle 12.1.0.2.0 ASM Flex Cluster using Oracle GNS which I believe uses zeroconf to create it's adhoc network. Before GNS starts, DNS works, i.e. nslookup, dig, ping, ssh all ...
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33 views

Proxy all requests to domain.tld

Here's the situation: I want to direct all requests to to a proxy server. One idea I had was to force the DNS server to respond to the request for domain.tld to the server running the proxy server ...
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36 views

Windows Server 2008 consuming a lot of bandwidth

My Windows Server 2008 has been consuming A LOT of bandwidth in the last days (990 GB). This is a development server so it should not consume more than 100mb aprox. We noticed this after the server ...
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25 views

Websites Appearing on Server but not rest of Network

We have a setup in which IIS is working properly if remoted into the server. On the actual sever, it is working with both with ip addresses and dns. If, however, I am on a client machine on the same ...
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68 views

KMS for Office 2013 defaults to old server - DNS is fine

I have a strange problem with a Server 2012 R2 KMS Server which has been migrated from a 2008 R2 Server - and by migrated I mean removed, and followed all instructions found here: ...
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135 views

Cisco ASA not allowing DNS traffic to pass?

I have an ASA 5515 as my internet firewall. It is not allowing me to do NS Lookups from any internal DNS Servers, or clients. If I set my nslookup server to 8.8.8.8 (google DNS), I can resolve public ...
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31 views

ASA/AnyConnect will only allow 53/udp to the DNS servers listed in the profile

I found a "bug/feature" in Cisco AnyConnect/ASA 5510: if a VPN client makes a query to udp/53 (DNS query) to any IP address that isn't listed as a DNS server in the VPN profile, then ASA drops this ...
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56 views

Configure adapter setting to add loopback IP address to the list of DNS servers

I have Active Directory integrated DNS. I ran the Best Practices Analyzer (BPA) for DNS and received the following error: I have the following network adapters: I am not using the second ...
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42 views

nslookup gives timeout based on request - what gives?

I have the following strange problem with the DNS lookups in our Windows domain (dns service runs on the domain controller): from machine 'A': dns request for machines in the same network zone ...
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81 views

CORS problems with DNS forwarding to AWS EC2 instance Atlassian Jira Tomcat

I have Atlassian Jira set up in a Tomcat server on my ubuntu AWS EC2 instance with a godaddy domain forwarded to an elastic IP on the EC2 instance. Looking at the console in Chrome, the JIRA ...
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48 views

DNS lookups occasional failing for subset of customers. Flushing DNS works - why?

From time to time I get customer support requests around connection issues they have connecting to my API. There seems to be a correlation with users moving outside of their normal routers or location ...
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82 views

Change dnserror.htm page when cannot locate website in Internet Explorer via Group Policy

When you type in a URL in Internet Explorer and it cannot be located via DNS it loads dnserror.htm from a .DLL in C:\Windows\System32\en-US\ieframe.dll.mui. I have read that you can use a program ...
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25 views

RNDC is not reloading my ACL list in Bind, how can I make it reload without losing Cache?

I have two ACL's, one expired, and one authorized. When I make a change to the ACL and try: rndc reload and rndc reconfig I do not see that the ACL was refreshed. Any ideas?