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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Local DNS server is ignored on Windows

I've setup dnsmasq on a Linux box and setup the DNS address on another Linux by adding its IP to /etc/resolv.conf file. $ cat /etc/resolv.conf nameserver 192.168.9.105 nameserver 8.8.8.8 Now I can ...
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IP address goes to subdomain instead of main domain [on hold]

Note: The question may be linked to Ip address goes to lowest alphabetical domain on server, however.. something is happening that makes this different. Say I have 2 domains: domain1.com and ...
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24 views

Internal network DNS can't be configed to route domain.com to www.domain.com?

We host a domain on the internet that is accessible outside of our internal network using domain.com or www.domain.com, but is our actual internal network domain as well, but the external website is ...
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48 views

Linux DNS (nslookup)

Am a newbie to DNS, installed DNS server on my linux VM and it's successful. But i have few queries about nslookup, where i was able to resolve FQDN but not was unable to resolve hostname. Q.) How to ...
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1answer
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Interchanging remote hosting with computer hosting vs. displaying availability state of computer hosting on remote website [on hold]

Recently, I bought a domain kkziomek.eu. The root domain is hosted on a remote hosting. I added a subdomain "komputer.kkziomek.eu" which is hosted on my computer. To do that I created a subdomain, ...
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18 views

AWS private hosted zone setup

I'm trying to set up a pair of VPC peers on Amazon. One of the VPCs has been in use for some time, and the other is a new VPC I've just set up. As part of this effort, I've associated an existing ...
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DSR on a DNS Cache Server… How

I have a doubt/problem. I have to set a DNS Cache Server that is behind a LB F5, i was asked to set 2 types of IPs, 1 IP is on 10.xx.xx.xx and its used to listen and reply all the cache store queries, ...
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17 views

AD, Service Account, SQL Server DNS Issue

I have very very little experience with network admin and AD, so excuse my ignorance.. I am intermittently getting this error in a Windows Service and website running in IIS (both on the same Server ...
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14 views

Office 365 MX record for subdomain

I have a domain registered with an external registrar (marcaria.com). It is configured to be handled by Office365. (DNS name servers set to ns1 (and ns2) .bdm.microsoftonline.com). I have a contracted ...
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16 views

Apple Mail can't connect to second domain on server

I'm not sure if I'm at the right place or if this question is too basic, but with the search I did, I wasn't able to find an answer. So, I use Apple Mail to fetch emails for my website hosted on ...
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16 views

samba4 internal dns not resolving local computer names to ip

Welcome I have a problem with samba4 internal dns, on DC and on machines can't resolve machines name to its ip, only DC name is resolved to ip: host -t A dcname dc name is 1.2.3.4 ok but host ...
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11 views

SQL Failover Cluster Clients not updating DNS

I have a multi-subnet SQL Server 2012 failover cluster running on 2 Windows 2012 R2 nodes. The cluster is located on 192.168.1.10 when on NODE A and 192.168.5.10 when running on NODE B. When I look at ...
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1answer
30 views

How to setup a forward lookup zone for a external IP

I have a external ip address and have configure the NAT on the router. I am just wanting to know how you setup the External Forward lookup zone and what I need to do with regards to fqdn, do I need ...
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11 views

Window server 2008 - set up DNS server just for email spam requests

We have a small office network and use SpamAssassin to help get rid of junk email. I've noticed that as our network uses an upstream DNS server all our spam checks to services like URIBL get blocked ...
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How to find Internets Root DNS Servers [on hold]

Where can I find the Internet's root DNS servers? Can I use a command line tool or is there a local file on my PC? And how does the PC know the IPs of these root nodes? Does it know? Does it have to ...
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Meaning of root zone

db.root file What are these lines suposed to mean? $TTL 86400 . IN SOA A.ROOT-SERVERS.EDU. root.A.ROOT-SERVERS.EDU. ( 1 ; serial number (update count) 28800 ; refresh (8 h) ...
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26 views

SOA admin mail field

I'm configuring bind name server. But we don't have a mail server in our zone. can I use my gmail as admin mail server? this is the configuration I want to use: mydomain.com. 10800 IN SOA ...
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31 views

godaddy vps dns setting

I have goDaddy Domain with this dns record a @ 107.150.xx.xx 600 seconds Edit cname email email.secureserver.net 1 Hour Edit cname ftp @ 1 Hour Edit cname www @ 1 ...
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21 views

SPF redirect modifier

The SPF record for domain replace the current record. The macro-expanded domain is also substituted for the current-domain in those look-ups. Examples: In the following example, the ...
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29 views

service name failed to start on centos

i am configuring the files on bind so when i restart service named so give me this failed notice. [root@admin51830019 admin51830019]# service named restart Stopping named: ...
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3answers
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DNS issue Cannot resolve hostname issue DNS

uMacBooks-MacBook-Pro:~ MacBook$ ping www.reurl.in ping: cannot resolve www.reurl.in: Unknown host MacBooks-MacBook-Pro:~ MacBook$ Hello all i just shifted my site from a shared server to VPS ...
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27 views

Redirecting multiple subdomains to a static site on Google Cloud Storage with Cloud DNS

I am trying to migrate my website from a wordpress site to a static site. I have added all my static assets to a bucket on google cloud storage and successfully pointed static.mildfuzz.com to that ...
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18 views

Change the DirectAccess DNS from the domain name used for the server

I'm having a problem setting up my DirectAccess on my network. Say my domain name (The one used when joining clients to the network) is primaryschool.edu.org but I want to use the domain (that's ...
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25 views

DNS Propagation: A Record change was successfull but there is a strange behaviour

I've changed the A record of my domain name to the IP of my new server. At the time of doing it, nslookup mydomain.com showed the old IP addresses as expected. After a day nslookup mydomain.com now ...
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22 views

Configure bind9 as slave DNS server w/ master DNS server having dynamic IP

I'd like to configure bind9 as DNS slave server doing axfr from a DNS master server (PowerDNS) which is behind a dynamic IP. The usual configuartion is: zone "example.com" { type slave; masters ...
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29 views

Best way to streamline DNS replication in a Parent-Child forest with poor network speeds?

I've recently started at a new place and I'm wondering the best approach for DNS resolution/replication It's a single forest (root.local) with 5 child domains (let's call them child1, child2 etc). ...
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1answer
34 views

Amazon EC2 Public IP vs. Public DNS

We have an EC2 running at Amazon. It has a Public IP and Public DNS. We use the Public IP in our domain records by creating an A record for www.example.com. Then the site becomes accessible. If we ...
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1answer
44 views

Error sending mail to some adresses

I have a webshop application which sends mail after a customer has placed an order. For some valid emailadresses, mail is not sent and after a day a failure report is send to an administrator. Then ...
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2answers
27 views

AD DNS: Point subdomain to external shared hosting

When creating my domain I didn't realize until computers were joined to it that my AD domain is example.com and my organization's website is also example.com, but is hosted on a remote shared web ...
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43 views

Why and How to set Public IP on Loopback Interface

I been using this forums for many years and this is the first time im in need to open a question, i search across the internet but i could not get an specific and clear answer, probaly because i dont ...
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21 views

environment host urls convention and using wildcard DNS

we're setting up new hosts and environment servers on our company... creating 3 server instances... dev, stage, production we've multiple clients and multiple projects per client so this is our idea: ...
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1answer
57 views

A non-recoverable error occurred during a database lookup

Short version: Why does Test-Connection report "A non-recoverable error occurred during a database lookup" for an offline host on a different subnet? I'm using PowerShell to ping a remote host with ...
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Issues configuring DNS server Windows 2012

I'm attempting to configure a virtual machine Windows Server 2012 to host a .net website using IIS 8.5. The website works well on localhost, and the domain name resolves when i'm on the server ...
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1answer
80 views

How to add a CNAME record?

On PowerDNS on a Raspberry, I have recursor pointing to Google (8.8.8.8) and only one zone file and it contains: $ORIGIN abc.co.uk. $TTL 1h @ IN SOA ns.abc.co.uk. hostmaster.abc.co.uk. ( 1; serial ...
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Why WmiPrvSE.exe is changing my preferred DNS each startup? [migrated]

Today I discover that WmiPrvSE.exe is changing my DNS settings on my main NIC at each startup. The following is an extract from Security event viewer following my registry Audit : - <Event ...
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multiple domains on the same smtp server

I have configured an email server according to this tuto - sorry in french. It's a postfix with mysql, dovecot, roundcube and postfix admin. I had to change some configuration but this is working well ...
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1answer
38 views

adding a domain name to my digital ocean droplet

I have a digital ocean droplet that I have no troubles accessing with the ip address. Now I bought a domain name and I am trying to add the domain name to my droplet. I've added the NS records to the ...
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Tumblr like blog aliasing nginx and dns

In short, I'm trying to make user1-blog.example.com point at user1-blog.blogo-matic.com with no redirect. So Lets pretend that a users wants to have a blog at user1-blog.example.com and wants to ...
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1answer
37 views

Backup DNS servers for a domain name - optimal configuration and troublehooting

Let's say we have these name servers for 1 domain. ns.1.com ns.2.com ns.3.com ns.4.com backup-ns.1.com backup-ns.2.com How can I know which NS responded to this specific query, for example using ...
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DNSsec responses from named / bind intermittently has RRSIG records missing

Responses from our nameserver are intermittently missing RRSIG records despite being requested. All other associated records (such as A records) are returned OK. Consequently dnsssec validation fails. ...
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2answers
49 views

Top level domain with dynamic IP

I have a web server at home. I bought a top level domain mydomain.com and I want it to point to my server. I also have a duckdns domain mydomain.duckdns.org. They say in their faq: Q: I want to ...
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23 views

Server SBS 2011 DNS

I have an SBS 2011 Server which has part of the DNS setup deleted by inexperienced fingers. Backups don't go back to before the damage was done. The DC is the only server on the Domain. I've tried to ...
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22 views

Unable to delete DNS forwarder in 2003 domain

I have an issue with deleting a forwarder in our Active Directory integrated DNS server, I get the following error: The server forwarders cannot be updated. Access was denied. When I go to he ...
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1answer
34 views

Load balancer questions

I have a website (ex: www.website.com) on aws that uses a large amount of streaming data (up to 10mbps / user). Lets say that my website is slowing down because the server simply cannot handle that ...
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46 views

Is there a way to alias DNS server hostnames? [duplicate]

I host several clients on my virtual server. They have their domains set to Linode's nameservers. In the event I ever need to change hosts, I would need to instruct them to change the nameservers. If ...
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Is it possible to have a secondary managed DNS provider to quickly delegate to when DDOS attack on our *primary* external DNS provider happens?

So our DNS provider, every so often, experiences DDOS attacks on their systems that causes our front-facing web sites to go down. What are some options in terms of reducing dependency on a SINGLE ...
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16 views

Setting up DNS on dual NIC Windows 7 machine

I have a Windows 7 machine with two NICs and that sits on two LANs (neither is connected to the internet). On one LAN the DNS seems to work just fine, I am able to reach other computers on that LAN ...
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2answers
35 views

SERVERFAIL error while doing nslookup on server itself. FreeBSD

I am using FreeBSD to setup a DNS server. I have install BIND and setup everything in resolv.conf and named.conf file. This is the ip address of my DNS server 192.168.10.100. in resolv.conf I added ...
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Correct DNS settings for postfix

I'm currently planning my new mailserver and can't stop thinking about one simple thing: The DNS settings. Most MX records look like mail.doomain.tld or mx01.domain.tld. Are there any advantages of ...
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1answer
58 views

Error “the specified domain either does not exist or could not be contacted” when attempting to join the domain

I have set up a server based on windows server 2008 R2, and has successfully joined 2 clients (one PC and one laptop, both windows 7) to the domain. Today I was trying to join another laptop to the ...