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

learn more… | top users | synonyms

1
vote
1answer
16 views

How can I selectivly override some A records on a Bind DNS Server?

I'm guessing there has to be a reasonable way to solve my issue but I'm trying to get some advice on a best practice to implement. I have recently moved to a Web Design company and we need to be able ...
-1
votes
0answers
11 views

Get IP subnet that reverse resolves to a given host

Recently, I have been getting a hit, at least once a day on my webserver from an IP address that reverse resolves to: 'ptr.cnsat.com.cn'. If I block the IP, on a subsequent day, the hit will be from a ...
1
vote
1answer
20 views

How to setup NS Record to External Name Server from Internal DNS

We have the following scenario: Our company has an Internal DNS & an External DNS server. Both of them holds the same domain (example.com). Our Internal DNS is a Windows Server that cannot ...
6
votes
3answers
18k views

What is the difference between a hostname and a fully qualified domain name?

I am new to the world of setting up servers and am baffled by the term hostname and fully qualified domain name. For example, if I want to set up a server that hosts files on the local network i.e. a ...
0
votes
2answers
240 views

Reducing the delay occured during DNS change

We have hosted our website in a windows server 2008 r2 with Godaddy and as a disaster recovery plan we do have backup of all website data and database files.We also have backup server which is similar ...
2
votes
2answers
1k views

How to setup redundant dns and dhcp servers with automatic dns updates on Ubuntu?

I'm trying to configure two virtual servers running Ubuntu to act as primary and secondary DNS and DHCP servers in my lan. I was able to get bind9 working as master and slave DNS servers. I was able ...
0
votes
1answer
27 views

Domain controller is registering 2 IP addresses with DNS

Recently a DC was promoted and the IP was used from the old DC which was demoted and shutdown.How tostop this DC from registering 2 IP addresses with DNS? Please let me know if any questions.
-1
votes
1answer
986 views

Delegation issue

I have a small vps in the Netherlands and a domain registered with bluehost. I added this domain account (WHM) to my vps by changing the nameserver of the correspondent domain on bluehost to ...
0
votes
0answers
9 views

Avahi How do I setup multiple servers that originally have the same hostname

Let me explain what I'm trying to do: I'm creating a Linux Distro Image that will be installed on a SD Card Setting the default hostname to myHostname.local This is all on my local network This is ...
1
vote
2answers
27 views

Why use CNAME in Route 53+S3 combination

I have been going through Amazon's docs on using Route 53 in conjunction with S3 to serve static websites. The strategy they show is to do: example.com A -> alias to ...
0
votes
0answers
6 views

Load balancing Bind9 with Keepalived and LVS

How can I correctly configure LVS to masqerade/NAT packets from virtual ip to/from clients? Currently I have: UDP 10.47.1.80:domain rr -> 10.47.1.51:domain Masq 10 0 ...
1
vote
3answers
2k views

Unable to resolve FQDN, hostname works

We are having an issue where computers who are not part of the domain cannot resolve the FQDN of a server (but regular hostname and ip do resolve). The strange thing is that this does work when the ...
4
votes
2answers
2k views

Remove “via” from emails sent to Gmail from Amazon SES

When sending emails from Amazon SES, gmail shows "sent via amazonses.com". How do I remove this? According to Google, I'm a sender and I don't want my recipients to see the "via" link. What can I ...
0
votes
1answer
12 views

How do I set up second IIS website with different domain name on a single server?

I've never done this before so I'm looking for help. we have a domain, domain.com, and the default site set up in IIS with a DNS forward lookup entry to have domain.com point to the site host so we ...
1
vote
1answer
63 views

AWS: how should I configure my vhosts to access different directories depending on the address I'm coming from?

I've just set up route 53 on AWS to link my server (ubuntu) to a godaddy domain name. I used to be able to access my /var/www/mmf folder from the elastic IP address given by aws (54.214.246.243/mmf) ...
0
votes
0answers
8 views

How to monitor DNS server activity on a Cisco router?

I have a Cisco 887 router (running IOS 15.4) which also acts as DNS forwarding server for a small network: ip dns server ip name-server A.B.C.D Is there any way to log/monitor/debug the DNS queries ...
-4
votes
1answer
27 views

Add allow transfer for ip via SSH step by step guide [on hold]

Is there a chance that someone can explain me step by step how can I go to file /etc/named.conf and then allow transfer for IP and add this options { // Additional details allow-transfer ...
1
vote
1answer
55 views

How to DNSSEC Sign Bind9 Reverse Zone

I'm using bind9 and dnssec-keygen/dnssec-signzone. I've had no problem signing my forward zones however I cannot seem to find any documentation on signing reverse zones. What is the process for this?
2
votes
1answer
22 views

dbjdns and nsupdate inter-compatibility?

Anyone aware if tinydns (dbjdns) and nsupdate work together and how to set this up? I can't find any documentation on the subject and would really love to use tinydns over bind.
1
vote
1answer
65 views

DNS wildcard entry doesn't resolve correctly (Microsoft DNS Server)

I am trying to set up a wildcard entry in MS DNS Server (on Windows Server 2008 within Active Directory) so that requests for all subdomains resolve to the same IP address. For example: ...
0
votes
1answer
32 views

What is the safe as AAAA record [on hold]

What is safe for AAAA record. Short or full format? I set this e.g.: 4a01:20:18:0:5:8:8:30 This is IP from mail server. But when smtp sending email out i see problems in logs. Gmail return email as ...
0
votes
0answers
45 views

AWS - elastic load balancer unable to handle the request

I'm totally new to AWS and the world. My problem here is while requesting to AWS server. I have a server staging-storage.zazzercode.co pointing to following DNS's with respective load balancers, ...
0
votes
0answers
12 views

Email messages are suddenly stuck in queue on Microsoft Exchange 2007 SP3

i am experiencing a strange issue on an Exchange Server i am responsible for. Suddenly, messages are getting stuck in the queue, with some of them being "Active" some other "Ready". I am not aware ...
7
votes
4answers
2k views

Is a wildcard DNS record bad practice?

I asked my hoster to add three subdomains all pointing to the IP of the A record. It seems he simply added a wildcard DNS record because any random subdomain resolves to my IP now. This is OK for me ...
0
votes
0answers
24 views

how to fix NAMED “unexpected error” (bind DNS)

time to time when server have many conections from internet i have this in log: arp -n Jul 23 17:41:38 sol-fttb named[1893]: client 195.122.135.80#35946: error sending response: unexpected error ...
1
vote
1answer
2k views

Bind FORMERR errors in syslog

I've recently switched out a failed router... and, a while later, I discovered a lot (at least an order or magnitude more than the number of queries) of errors reported in /var/log/syslog - of the ...
0
votes
0answers
10 views

DNS Server Forwarder to alternative port [on hold]

My ISP router blocks and rewrites all requests coming on port 53 (DNS port) so I can't use any alternative DNS server. Some provider, like OpenDNS, have DNS server listening also on port 553. Most of ...
1
vote
1answer
31 views

Windows Server 2008R2 Print server, access by CNAME not working

I am trying to alias my print server to \\printserver. The actual name of the server is \\fileserver1 and/or \\fileserver2. The idea is that I can switch the CNAME between each real server as ...
-1
votes
1answer
21 views

Bind domain with sub-domains to home server [on hold]

So, I've developed an app in php and it depends on the sub domain to decide the database it connects to. So basically, I would like to know how (and where) can I buy a domain name and how can I make ...
0
votes
1answer
39 views

Can winbind influence name resolution in Linux

I have to Linux boxes on vagrant, the have the same /etc/resolv.conf and /etc/hosts, but one is using winbind to do SSO with Active Directory. When I try to resolve the domain controllers with: dig ...
0
votes
1answer
36 views

How to set DNS exclusively for a Network Namespace in Linux

I've created a network namespace in Linux. I thought there was a resolv.conf file for each namespaces created but it's not the case on my system. I don't have the following path ...
0
votes
1answer
2k views

Dynamic DNS registration for VPN clients

I've got a VPN server set up in my Active Directory on a remote network. (VPN Server is separate box from DNS/AD) When I dial into the network (client machine is not a member of the AD) the machine ...
2
votes
0answers
25 views

Are DNS server responses categorized as “ESTABLISHED” by iptables? If so, why? [duplicate]

CentOS 5.x I'm trying to confirm which specific rule in my iptables config is allowing return UDP traffic from my DNS server. I THINK, it's this one: -A RH-Firewall-1-INPUT -m state --state ...
2
votes
1answer
33 views

No external network access to virtualbox CentOS6.5

I have CentOS 6.5 running locally in virtualbox. I set it up and everything was working perfectly. I came back after the weekend and I noticed the computer was frozen so I had to do a hard restart. ...
0
votes
0answers
86 views

How long does migration of two domains to the same nameserver take in DNS?

I have a primary .com domain, which i wanted to update. So I built the new site on a .info domain. To migrate the .info domain DNS to point to the address of the .com domain, I updated the nameserver ...
6
votes
3answers
4k views

What is the difference between Anycast and GeoDNS / GeoIP wrt HA?

Based on the Wikipedia description of Anycast, it includes both the distribution of a domain-name-to-many-IP-mapping across many DNS servers as well as replying to clients with the most geographically ...
8
votes
0answers
135 views

What does a warning icon on a conditional forwarder mean in Windows DNS Manager?

The icon for one of the conditional forwarders on an Active Directory DNS server I manage has a standard warning icon (yellow triangle with exclamation point) overlay (all names have been changed to ...
1
vote
1answer
41 views

DNS and IP Configuration for Windows Server 2012 DC

I am getting these errors: SERVER Error DNS: DNS servers on vEthernet (Intel(R) 82567V-2 Gigabit Network Connection - Virtual Switch) should include the loopback address, but not as the first ...
0
votes
2answers
33 views

Force DNS lookups through specific adapter on OS X?

Is there a way to force DNS lookups through a specific adapter's servers on OS X? I have an ethernet connection and a wifi connection, but I'd like all DNS requests to go through the ethernet ...
0
votes
1answer
123 views

BIND as secondary DNS to Windows Server 2012. Windows complains that BIND is “not authoritative”

Short version How do I tell BIND to be authoritative for a zone that it is a secondary master for? I think I understand the meaning of authoritative but ... maybe not. I want it to be a secondary to ...
1
vote
2answers
130 views

Intermittently unable to connect to specific URLs

I have a simple and typical network configuration consisting of an ISP-provided cable modem connected through a SonicWALL router/firewall to a single switch that has been operating flawlessly for ...
0
votes
2answers
38 views

Routing mail from domain to external provider

I have a server with hostname and DNS example.com. I also have a google apps account for user@example.com. I have my MX records setup correctly and I can send and receive emails to and from ...
-1
votes
1answer
32 views

How to setup a domain on a Linux Server? [closed]

I would like to setup a domain name for my linux server. I can currently access it as an IP, but for public it would be easier by a domain. I already bought it, it's on namecheap. I want to set it up ...
3
votes
2answers
233 views

Domain Controllers as internal DNS servers

Our company environment is growing rapidly and I'm in the process of upgrading our Domain Controllers, but before I do I wanted to do a quick sanity check to make sure I'm still doing everything the ...
-1
votes
0answers
23 views

Why is MyDomain redirecting my domain to AlphaGraphics?

I purchased cjsh.name through http://MyDomain.com. At present it is making an unwanted redirect to http://www.alphagraphics5280.com, possibly as an added "parking service." (Judging by the time it ...
0
votes
2answers
501 views

MULTIPLE A Records for server hosting mail, dns and www on ONE IP

Could not find an answer, really. So I have a server running having one ip address assigned. The server is hosting www, dns and mail. This is how I tried to configure it (excerpt): IN ...
0
votes
0answers
31 views

Incoming / Outgoing only working with mail

I have setup my domains nameservers to cloudflare (has been for a while so that side is all resolved) and the records as follows: Type Name Value A highwaysindustry.com ...
0
votes
2answers
813 views

Proxy Settings per Machine not working on windows server 2008 R2 SP1

i have a very interesting problem and would appreciate any help for it. In my scenario i have scripts which bring up a VM inside a domain. Now i want to enable internet access for all the VM's and ...
2
votes
4answers
583 views

Possible to point wildcard subdomain to top level domain via DNS settings?

Is it possible to point wildcard subdomains to a top level domain via DNS settings alone? I would like to have *.mydomain.com redirected to mydomain.com. mydomain.com is hosted on a 3rd service. I ...
1
vote
1answer
2k views

OpenVPN: Not all DNS entries get pushed to clients from server. (dnsmasq)

I have been trying to find a solution to this problem, but have found no answer so far, so I hope you guys can help me out. I have a server running Ubuntu 10.04, which has a static IP address and an ...