Questions tagged [domain-name-system]

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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3
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4answers
334 views

Free web-based DNS tool for viewing DNS records [closed]

Is there a good and free web-based service, that lets me see all DNS records (A, MX, SOA, etc.) for a given domain?
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7answers
484 views

DNS - Using My Own Domain Name

I know you can use something like http://www.dyndns.com/ to point ReallyCoolName.dyndns.com to 74.125.127.100 which is google.com How would you go about pointing ReallyCoolName.com to 74.125.127.100 ...
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6answers
369 views

Redirect domain

I am setting up a couple micro sites that I would like to have their own url associated with. How can I redirect that url to a sub folder of an existing site? for example, i might like to redirect ...
3
votes
3answers
5k views

How to configure *.subdomain.domain.tld in Windows 2003 - wildcards in DNS

I think the title says it all really, but to reiterate, I'd like to know how to configure Windows 2003 to allow a wildcard on a subdomain. So site1.sub.domain.tld and site2.sub.domain.tld should both ...
8
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4answers
18k views

How does a Reverse DNS lookup work with regards to spam filters?

I have heard that most spam filters use a reverse DNS lookup on the originating IP address of the sending SMTP server (or something like that) as part of the verification process. I want to make sure ...
4
votes
3answers
7k views

DNS issue on Windows SBS2008 - Some external websites unavailable

Since few weeks, some websites are suddently unavailable. We are getting a 404 - The web page requested cannot be displayed. Basically, the only way to fix this is when I restart the DNS client/...
1
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1answer
1k views

Windows Server 2003 DNS Forward Lookup Fails Reverse Look Up Succeeds

I really don't understand why I'm experiencing so much trouble for just creating a simple dns entry for myself. I have a Windows 2003 Server that is a Domain Controller and the DNS Server. This server ...
87
votes
8answers
121k views

Is a wildcard CNAME DNS record valid?

I know it's valid to have a DNS A record that's a wildcard (e.g. *.mysite.com). Is it possible/valid/advised to have a wildcard CNAME record?
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3answers
5k views

Single IP with multiple DNS

I have taken new account for dedicated server at SoftLayer.com. As per the terms and conditions they have to allot some set of dedicated IPs. After new account creation, I have hosted one web ...
0
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1answer
638 views

Quick way to duplicate zones in BIND

We have a standard high-availability setup at a co-location facility that we host client programs on. For some programs, we host the DNS, but I find that setting up multiple zones manually can be ...
2
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8answers
8k views

Replacement for nslookup on windows

This is on Win2k3 DNS server. In troubleshooting some dns issues this morning I started seeing some odd results from nslookup. I searched a bit and found that many believe nslookup is a flawed tool. ...
4
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2answers
67k views

Local DNS not resolving host name but will resolve FQDN

I have a Win2k domain that has recently started having problems with clients connecting to network shares. I attempted to disjoin/rejoin a client and have not been able to get it reconnected. At this ...
0
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5answers
191 views

How to have a webserver resolve urls in php files?

Instead of having the client resolve URLS, I want to let my webserver do that. So ideally, I could turn this: <a href="http://www.long-domain-name.com/"> into this: <a href="http://domain/"...
0
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2answers
86 views

Designing AD Domain for SQL Server in multiple third-party locations

I have an application that uses SQL Server where I plan on deploying four instances to four different third-party dedicated hosting providers. The databases will replicate between each other. So, does ...
16
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3answers
41k views

Do entries in local 'hosts' files override both forward and reverse name lookups?

If I have the following entries in a hosts file: 192.168.100.1 bugs 192.168.100.2 daffy.example.com 192.168.100.3 elmer.example.com. Will IP->name resolution attempts by local utilies (I ...
1
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3answers
3k views

Windows DNS keeps re-registering deleted ip addresses

I have 2 nameservers running Windows Server 2008. On these servers we have routeable and private/non-routeable ( 10. _ . _ ._ ) IPs. The problem is that a query for the nameserver's network name ...
66
votes
7answers
8k views

DNS failing to propagate worldwide

I haven't changed anything related to the DNS entry for serverfault.com, but some users were reporting today that the serverfault.com DNS fails to resolve for them. I ran a justping query and I can ...
3
votes
3answers
20k views

Recommendation for a free and small DNS server for Windows

I'm looking for a free (GPL or BSD) and lightweight DNS server that runs on Windows, which I can use as a server for my coLinux installation, which, when configured via slirp, always gets the Windows ...
13
votes
8answers
47k views

Finding all domains registered in a nameserver

Up until now, I was pretty confident that it was pretty much impossible to list all the domains handled by a nameserver. But apparently, there exists a couple of websites on the Internet that are ...
2
votes
3answers
16k views

Configure a Local DNS Resolver That Only Caches for a Short Period

I am working on an application that will be used to verify new domains are configured correctly as they're set up for hosting. Part of this checks the validity of SPF, DomainKey, DKIM records, etc. ...
0
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2answers
2k views

Windows DNS Manager and Sub Domains

Complete NooB question here and I suspect I've badly mangled the terminology!... Running DNS Manager on a Windows 2008 PDC. This will control domain queries for everything under mydomain.com such as ...
1
vote
4answers
1k views

Inconsistent Domain Names From hostname -f and domainname

I am setting up a Postfix mail server, hostname 'letters', to handle mail for the domain 'example.net'. I have tried to set letters' domain name to example.net using nis, but I'm getting inconsistent ...
1
vote
3answers
210 views

Pruning domains which we are not an authority for

I have a DNS server (Win 2003) which handles a few hundred domains. If one of our clients changes their domain to use DNS servers which are not ours, we still have all of the records. Is there a way ...
246
votes
12answers
756k views

What's the command-line utility in Windows to do a reverse DNS look-up?

Is there a built-in command line tool that will do reverse DNS look-ups in Windows? I.e., something like <toolname> w.x.y.z => mycomputername I've tried: nslookup: seems to be forward look-...
13
votes
5answers
95k views

DNS - Any way to force a nameserver to update the record of a domain?

I am doing some work on some domain names. I'm updating them. By using dig I can query our nameserver and I can see that the correct name has been updated. However our office dns cache is still ...
5
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2answers
640 views

kaminsky bug - bailiwicks

I have been reading about the kaminsky DNS bug, trying to better understand how it works. I think I have the gist of it, but Dan mentions bailiwicks, being used to target DNS servers behind firewalls. ...
6
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5answers
4k views

DNSCurve vs DNSSEC

Can someone informed, please give a lengthy reply about the differences and advantages/disadvantages of both approaches? I am not a DNS expert, not a programmer. I have a decent basic understanding ...
0
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1answer
172 views

Plesk isn't serving up the right page [closed]

I have Plesk configured to serve up subdomain.mydomain.com as well as mydomain.com. But, instead of displaying the content, no matter which URL I go to, it displays the default Plesk page. I've ...
0
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3answers
1k views

Nameserver changes don't seem to be propagating

So I just changed webservers and I went to change my nameservers for the affected domains. I duplicated all of the DNS records on the new server, so that the transition would be easier, and then ...
2
votes
2answers
4k views

Backup / Restore Windows DNS

How do I backup the Windows DNS (AD) content, in a form that enables simple restore? Partial restore, e.g. a sub-domain, is also nice to have. I am not looking for solutions involving full Windows ...
1
vote
2answers
4k views

Event ID 1030/1058 causing DNS and Group Policy errors

I've discovered an on-going problem on our Windows Server 2003 domain where some clients are unable to access the UNC path using our root FQDN (we'll call it primary.org). This causes some interesting ...
0
votes
1answer
3k views

DNS Server on Fedora 11

I recently upgraded my Fedora 10 server to Fedora 11 and am getting the following error in my DNS/named config. named[27685]: not insecure resolving 'fedoraproject.org/A/IN: 212.104.130.65#53 This ...
11
votes
7answers
5k views

Check public DNS health and RFC compliance

Every now and again I like to run checks on my DNS servers to make sure they are running right and to RFC spec. I used to use the DNSTools website to do this as it gave me a pretty good picture of ...
1
vote
1answer
263 views

DNS wildcard RRs of different type possible?

assume I have a domain with the following RRs: domain.com. IN A 1.2.3.4 domain.com. IN MX mail.domain.com. 10 * IN MX othermail.domain.com. 10 * ...
2
votes
5answers
647 views

Running own DNS server

I have for a long time had my own "play-around" domain kaareskovgaard.net where I've had a minor blog running. I recently decided that I wanted to try to run my own server on it, and so I ordered a ...
2
votes
1answer
5k views

DHCP failing to update DNS, no Active Directory

I have a DHCP and DNS server, running Windows 2003 SP1. I configure everything according to this Microsoft Technet article "Using DNS servers with DHCP", but it does not work. Note that the client is ...
2
votes
4answers
1k views

BIND/Named: disabled recursion, client to use alternative servers

I'm setting up a simple DNS server (BIND/Named), which is running locally on a OSX Laptop. Its purpose is to resolve all requests for "*.laptop.example.com" to "192.168.2.2" - which is the manually ...
1
vote
3answers
601 views

Multiple servers using same nameservers

I have 2x servers with the following OS's and Control Panels: Windows Server 2003 running Plesk 9 Centos 5.3 running WHM/cPanel The Windows server 2003 server is hosting the two nameservers: ns1....
1
vote
2answers
5k views

Windows Server 2003 DNS added CNAME not working

I'm trying to create a subdomain alias on my DNS server to have portal.domain.com instead obscureServer32324name.domain.com I've attempted both a a CNAME alias to the exact A host entry or creating a ...
1
vote
6answers
10k views

Why am I getting duplicate DNS entries for same IP address?

I have a system (SYSTEMX) that is connected to our network through a VPN. Periodically the VPN gets disconnected and SYSTEMX loses its connection to the network. When this occurs I usually easily ...
3
votes
2answers
227 views

What DNS records should I set up for a new server?

It is an ordinary server: we will run a web site on and it should be able to send/recieve email.
16
votes
2answers
6k views

Website and Active Directory domain share the same name

In our network the name of the network domain is also the domain of the organization's website (say, example.com). Externally, people can enter example.com to visit our website, but internally, this ...
0
votes
3answers
400 views

Creating multiple DNS sub-domains per client

Dear people who understand the Domain Name System, please would you be so kind as to explain a few things to me. Let's assume I have a single publicly accessible web server, with a single IP address ...
0
votes
2answers
586 views

BIND for Windows domain in DR site

Situation: We have DR site that needs to be tested There is a mix of Linux and Windows hosts on DR site.In case of disaster if SERVER in production site is not available, SERVER_DR on DR is switched ...
2
votes
3answers
3k views

Migrate 200 Domains from Win2003 DNS server to another

We are migrating just under 200 domains from a DNS server at another location (we have remote desktop access) to a server at our location. Is there a simple, scripted way of doing all of the zone ...
4
votes
4answers
15k views

How can I set a search domain (and other resolv.conf parameters) in Ubuntu?

I like Ubuntu's NetworkManager -- it does a great job keeping track of all my WiFi parameters and passwords. However, when I actually plug in an Ethernet cable, the frustration begins. When hooked up ...
0
votes
3answers
6k views

Unexpected RCODE(SERVFAIL) causing bind to crash?

Every two days or so, my server stops responding entirely to its services. I can ping it, but I cannot use SSH so I have to go into my host's control panel and reset it. When it comes back up, the ...
1
vote
1answer
716 views

Initial Windows 2008 VPS Setup

I've just got my first VPS server, yay! It'll primarilly be used for my own hosting (I'm a Web Application Developer) and for friends & family. It's just been all setup fro me bare bones and I ...
1
vote
5answers
1k views

How do I set up a nameserver to process ALL DNS requests?

Is there any way I can set up a nameserver to process ALL DNS requests that come to my server and pass them on to backend servers regardless of whether I have a DNS entry for the target domain? For ...
1
vote
1answer
5k views

Small Business Server 2008 Not Responding to External DNS Queries

I have just deployed SBS 2008 Standard and am able to do DNS Queries against the internal DNS Server, however, none of the clients are able to collect a response. I have checked the Firewall ...