A collection of computers or other networked resources.

learn more… | top users | synonyms

63
votes
4answers
32k views

Where does email sent to *@example.com go? [closed]

So I've wondered this for a long time. Where does email sent to *@example.com go? If I accidentally sent sensitive information to *@example.com would some evil person (potentially at the IANA) be ...
62
votes
3answers
19k views

Can I create a top level TLD? (.michael for instance)

It appears that ICANN is allowing the creation of top level domains. Instead of 'registering' a domain, you would essentially be signing up to be a registrar (you'd be giving out registrations on ...
60
votes
22answers
10k views

How the heck is http://to./ a valid domain name?

Apparently it's a URL shortener. It resolves just fine in Chrome and Firefox. How is this a valid top-level domain? Update: for the people saying it's browser shenanigans, why is it that: ...
46
votes
2answers
13k views

Why does Heroku warn against “naked” domain names?

I ran across this page in the Heroku docs... Naked domains, also called bare or apex domains, are configured in DNS via A-records and have serious availability implications when used in highly ...
34
votes
1answer
1k views

What's the meaning of logging in as “username@mydomain.com:something”

My Windows 2008 R2 machine is joined to a domain. In the logon screen, if I type in "username@mydomain.com:something" as the username, I can still logon properly, what's the meaning of ":something" ...
28
votes
7answers
3k views

Why is it a bad idea to use a customer email as the from address

I've got an application that emails users once they have filled in a form. It uses a no-reply@customerdomain.com as a from address. The customer wants it to use the email from the form as the from ...
26
votes
6answers
2k views

How do I convince my company to invest in IT - domains, security, etc.?

I work for a small-medium size retailer which has half a dozen high street stores and a website. The IT situation is currently in a very basic state. As being "Head of IT" is only a small part of my ...
25
votes
2answers
4k views

Why doesn't Kosovo have its own ccTLD yet?

Why is it that Kosovo still hasn't got its own ccTLD? Kosovo is (semi)-independent, from Serbia (former Yugoslavia), since 2008. Montenegro is independent since 2006. Montenegro has the .me domain ...
23
votes
1answer
2k views

If I own a domain do I own all of its sub domains?

If I own a domain do I own all of its sub domains? For example if I purchase example.com, do I automatically own mail.example.com, blog.example.com, etc? If I do not own the sub domains, can anyone ...
22
votes
3answers
65k 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 ...
21
votes
2answers
36k views

How should I setup separate MX records for a subdomain?

Let's say I have a domain that I run a web application on, for example cranketywidgets.com, and I'm using Google Apps for handling email for people working on that domain, for example, support@ ...
20
votes
5answers
55k views

How to find all hostnames in DNS attached to one IP?

If I have multiple hosts configured on one machine (a la apache's VirtualHosts), how can I do a lookup on the IP and find all domains configured to reach it? For example, I have several web and email ...
19
votes
4answers
19k views

How to test DNS glue record?

Hello I have just set up a DNS server for my domain example.org with 2 name servers ns1.example.org and ns2.example.org. I have attempted to set up a glue record for ns1 and ns2 at my registrar. It ...
16
votes
2answers
775 views

How come com can't be resolved?

I realize how some might think this isn't exactly constructive, buuuut, I was wondering how come you can't resolve com, org, us, ru, or any other top level domain? I am taking this is as a learning ...
16
votes
4answers
30k views

Check if user password input is valid in Powershell script

I am working with a Powershell script that adds scheduled tasks to systems in our domain. When I run this script, it will prompt me for my password. I sometimes fat finger the password and the process ...
16
votes
1answer
1k views

Is the hostname part of HTTP(S) URLs truly case-insensitive?

Is it safe to use http(s)://CompanyName.com/xyz as URL (e.g. for branding purposes) without any changes to the service-side configs? I know that DNS is case-insensitive, but could there still be ...
13
votes
3answers
2k views

Can I use the character ñ in a sub-domain?

We are launching our website in Spanish and are probably going to call it espanol.mydomain.com Since the real spelling is español, ideally we would allow people to type español.mydomain.com. Is ...
13
votes
4answers
3k views

OpenLDAP, Samba and password aging

I'm configuring a system in which all IT resources are available through a single user-password pair, be it access to shell on the servers, logging to Samba domain, WiFi, OpenVPN, Mantis, etc. (with ...
12
votes
5answers
50k views

How to redirect domain A to domain B using A-Records and CNAME records only

I have 2 domains hosted with different hosts. I need to redirect Domain A to Domain B. Unfortunately I can't do a 301 redirect from Host A, but can only modify/add DNS entries (A-Records and CNAMEs) ...
12
votes
2answers
9k views

Create Unix Named Socket from the Command Line

Is there a command similar to mkfifo but for domain sockets?
12
votes
3answers
882 views

How to remove ourselves from nudity blacklists? [duplicate]

We recently bought our domain. It turns out, two generations ago, it was a porn site. Now we're still blocked in some filters, resulting in blocked pages at several corporate routers. I'm now ...
12
votes
1answer
721 views

Will I lose my .fr second-level domain once I am no longer a resident of Europe?

Hopefully this question is appropriate here. The .fr TLD stands for France and is managed by AFNIC. In order to register for second-level domains under this TLD, one is required to be a resident of ...
12
votes
2answers
1k views

How do I prevent Apache from answering requests for domains I don't host?

Someone has pointed their domain (www.bomberball.net) to the same IP as my domain (www.kapparate.com) , and Google is now showing the former when searching for Kapparate, rather than the latter. ...
12
votes
3answers
42k views

Domain login very slow 10+ minutes

We are racking our brains trying to figure this problem out an are currently stuck! Basically we are having issues with some users taking ages to log in in the mornings, some times up to 20 minutes, ...
11
votes
2answers
9k views

What is a cookie-free domain?

What is a cookie-free domain? I've seen these words many times but I never understood what it is.
11
votes
2answers
2k views

Cannot create new user account Windows Server 2012

I created a Windows Domain account that works on MYDOMAIN. All computers attached to MYDOMAIN can use the credentials I have created for log on except for one. On PROBLEMSERVER01 when I try to log ...
10
votes
7answers
6k views

Would IT ever need a user's domain password?

Is there anything a Windows domain administrator might need to do while configuring a workstation for a new user that absolutely can't be done without the user's domain account password? To avoid ...
10
votes
3answers
1k views

How do you register a domain without a TLD?

So I found this website that is visitable and does not have a TLD? Anyone got any idea how to do this?
10
votes
4answers
11k views

Apache CustomLog to log full URL

I'd like to add a CustomLog directive to my apache configuration to log the full URL requested (or at least the host portion of the URL). I have several domains being handled by the same instance of ...
10
votes
3answers
6k views

When are DNS “glue” (or “host”) records needed?

I kind of know why glue records are needed (cyclic dependencies), but when are they needed? Are they only needed when setting a domain's nameservers to my own machine on the internet - like ...
10
votes
2answers
6k views

Godaddy cname “@” not working (instructions from Heroku)

I created a little app on Heroku, and am trying to follow their directions for setting up a custom domain on Godaddy. I've created a CNAME for www, but I can't create one for @ (or mydomain.com. per ...
9
votes
4answers
1k views

How many domains on a single Apache server?

I'm hosting about 300 domains for my clients on a single Apache server. They all don't have much traffic, so the server load is not a problem. Theoretically there should be no limit how many of such ...
9
votes
3answers
3k views

At what point does a Domain suit a network better thatn a workgroup?

At what point does a Domain suit a network better than a workgroup? Is there a threshold below which a domain is simply too much work for benefits gained? Is there a point after which a workgroup is ...
9
votes
1answer
20k views

What is the 'cacert.pem' and for what to use that?

I am developing a web application on localhost with domains and sub-domains and I would like to use a HTTPS connection. On my Mac OS, in order to enable SSL, I need to set Apache correctly, so I ...
9
votes
4answers
24k views

How to disable Tcp/Ip settings in windows 7 via GPO?

I have enabled following policies, "Prohibit TCP/IP advanced connection" "Prohibit access to properties of components of a LAN connection" "Enable Windows 2000 Network Connections setings for ...
8
votes
2answers
16k views

Simple apache2 redirect from one domain to another

What I want to do is the following: My domain xy.example.com no longer exists. Thus I want to do a simple redirect to the new domain abc.example.com. It should be a redirect, that also works when ...
8
votes
3answers
776 views

Can 'Domain Users' join computers to the domain?

That sounds very unlikely to me, but just to be sure: Can a member of 'Domain Users' join a computer to the domain (granted that he has the local administrator account)? The instructor said it, and ...
8
votes
1answer
376 views

NS records chicken and egg: NS in the domain it's serving [duplicate]

I've dealt with BIND for years and this has always kind of bugged me. $ dig google.com ns ;; QUESTION SECTION: ;google.com. IN NS ;; ANSWER SECTION: google.com. 87046 IN NS ...
8
votes
6answers
30k views

How to find the computer name a user logged on to

Is there a tool or script or some other way of knowing what computer name a specific user is currently logged on to? Or even was logged on to? Say the user "HRDrone" is working on his machine whose ...
8
votes
3answers
7k views

Verify that a name server is registered at a TLD registry

Let's say I own the domain name example.tld. It is registered at registrar R. In my account at R, I registered the following name servers for the .TLD registry: ns1.example.tld --> 123.456.789.001 ...
8
votes
4answers
15k views

Network Logon Issues with Group Policy and Network

I am gravely in need of your help and assistance. We have a problem with our logon and startup to our Windows 7 Enterprise system. We have more than 3000 Windows Desktops situated in roughly 20+ ...
7
votes
8answers
65k views

How to tell what time a domain user logged in?

In the "Security" event log on a Windows 2003 domain controller, I see several entries of event 540 -- "Successful Network Logon" averaging a few minutes apart throughout the day. Is the first one of ...
7
votes
3answers
674 views

Reset Windows user domain password

Is there a way to reset a user domain password remotely without login to a remote desktop to the domain controller? I could not find any MMC plugin in non-server Windows (Window 7 Ultimate in this ...
7
votes
2answers
2k views

Getting a domain name off of the blacklist

I have a friend who purchased a domain name recently that he found out (after buying it) is apparently blocked by many corporate firewalls or proxies b/c it's been tagged as porn by the blacklist db ...
7
votes
1answer
759 views

Is there any way to restrict user from changing file extensions in Windows XP, Vista, Windows 7?

For example, not allow users to rename abc.doc to abc.jpg? Is there any windows group policy for that? I am not asking file association restriction. If it really can't, is there any group policy to ...
7
votes
1answer
569 views

How do I remotely issue a CLI command to thousands of Windows domain computers at once?

I need to issue a CLI command (cmd.exe or PowerShell) to all of the thousands of computers on my domain. For obvious reasons, this is not going to involve doing the task manually, or physically ...
7
votes
7answers
45k views

Set Windows 7 Default Login to a Non Domain Account

We have 12 Laptop Pc's that we have upgraded from Windows XP to Windows 7. The laptops are used by staff on away days. They log on to a local account on the machine - say User1 with no password. On ...
7
votes
4answers
2k views

Does Google Domains support CNAME-like functionality at the zone apex?

This functionality is required for properly directing a root domain to Heroku: https://devcenter.heroku.com/articles/custom-domains#cname-functionality-at-the-apex Some registrars, like DNSimple, ...
7
votes
2answers
73 views

AD: Domain migration or renaming?

I've been given the task of listing down important activities with their estimated effort to help choose the best option/solution for the following scenario: The current domain is named "Domain0" and ...
7
votes
2answers
25k views

SQL Server 2012 with account NT Service\MSSQLSERVER access is denied in domain

A few months ago we installed SQL Server 2012 in Windows 2008 R2 under the virtual account "NT Service\MSSQLSERVER", all good. A few days ago, one of the admins of the IT dept installed Full Text ...