Tagged Questions

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

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0
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1answer
9 views

Curl to self using fully qualified address

I'm running a Virtual Private Server to host some websites. I have a PHP script that tries to fetch resources from the server, essentially using a curl command to the server ...
-1
votes
0answers
16 views

Please help to understand : ping

Am using ubuntu 13.10 I have used ping before to check server is up/down. but Just today found this accidentally, and I don't understand why this happens. Can someone mind to help to understand, as ...
0
votes
0answers
8 views

Centos 7 with SElinux: openvpn and DNS

I'm trying to use openvpn as client on centos 7. It works fine, but i cannot get DNS from server. As you know, there is no resolvconf in new Centos, so, standard update-resolv-conf script doesn't ...
-5
votes
0answers
21 views

Subdirectory of a domain on a different server

Hello Server Fault Folks, I have the following scenario: On one physical server, cocktailbuilder.com, I have a custom web application. On another physical server, let's call it X, I have a ...
1
vote
1answer
24 views

DNS Zones: criteria to create new zone delegations

If I'm not wrong, within a domain name a company owns, their administrators have complete freedom to create as many cuts (zone delegations) inside the domain tree as he wants, but, inside his own ...
-2
votes
1answer
29 views

How does a resolver know a DNS response is authoritative?

The title says everything about me question. How does a resolver know the response comes from an authoritative name server? An equivalent question: what flag or field is marked by a name server to say ...
0
votes
0answers
21 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 ...
0
votes
0answers
12 views

Accessing Content After Domain Registration [on hold]

I have a website registered on free hosting plan with its free domain.Something like MyWeb.x10.mx Right now, I want to add another domain to it like MyWeb.com but have access to the same content which ...
-3
votes
2answers
40 views

Two Servers one Domain - What about DNS? [on hold]

I have a website mywebsite.com/forum If you type mywebsite.com in your browser, you will be redirected to mywebsite.com/forum through a script. Now, I want to have a blog on the main page ...
0
votes
0answers
21 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 ...
0
votes
1answer
15 views

Spoofing DNS for another domain within a DMZ

I am setting up a DMZ disconnected from our corporate LAN. I've moved DNS services for the DMZ hosts into the DMZ with a stripped down set of zone info containing only what the DMZ hosts need to know. ...
0
votes
0answers
39 views
+50

Bind only works Locally - Ping works locally not externally

I am using Bind on a Centos 6.5 server in order resolve subdomains to an IP. I have *.ddns.example.com and ddns.example.com pointing to my server via A record. I have added a zone for this, see ...
0
votes
0answers
24 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: ...
0
votes
1answer
18 views

Connectivity problems on website

We've been experiencing some connectivity problems on http://www.scirra.com. Running a DNS check: http://dnscheck.pingdom.com/?domain=www.scirra.com We're getting some errors: Delegation not ...
-3
votes
1answer
29 views

One domain, two server Ip

I have a domain like mysite.com, then in the DNS config I set: A (HOST) * myProductionServerIp @ myProductionServerIp CNAME www @ So any query to mysite.com or www.mysite.com will ...
-3
votes
0answers
23 views

CNAME on shared hosting [on hold]

I essentially want to know how a CNAME record works. If I have a CNAME for profile.joebloggs.com pointing to mysite.com would I need to set up my virtual host to accept profile.joebloggs.com on ...
1
vote
1answer
41 views

Apache/DNS - Pointing Domain Name to Folder in my Directory

I have a folder with an app that I'm serving. In my httpd.conf, I set up a virtualhost to point to that folder. During development I set it up to point to a subdomain on a domain that I own ...
3
votes
1answer
52 views

Corrupt DNS requests

Sometimes in some network captures that include my DNS server, I find there are failed lookups for what seem like invalid requests. When viewed in Wireshark these show up with what looks like escaped ...
-1
votes
1answer
33 views

Switching to different domain registrar and different host without any website or email downtime

What I currently have: Domain registered at register - oldregister.com Website hosted at different host - oldhosting.com Email hosted at different email provider - oldemailhosting.com What I want: ...
1
vote
0answers
18 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 ...
-5
votes
1answer
45 views

How to add reverse dns record on cloudflare [on hold]

I need to set PTR record on my cloudflare account, because all outgoing mails are going to spam. I do not see ptr record in my cloudflare account. Can I use txt/srv record instead?
-2
votes
1answer
31 views

nslookup on VirtualBox virtual machine not working [on hold]

Request: If you want to down vote this question, please at least leave a comment as to why you have, as I'm new to this site & would appreciate some feedback I've got a VirtualBox VM setup using ...
9
votes
2answers
2k views

Why is DNS returning two different results at random?

I changed my nameserver and host company for my domain 30 hours ago. Now, DNS propagation checks indicate that the correct nameserver is recognized worldwide. However, browsers on my own machines ...
4
votes
1answer
131 views

Purpose of SOA record in DNS (apart from zone transfer)

Does the SOA record in a DNS zone file have any purpose whatsoever, apart from zone file transfers? If a DNS server does not rely on zone file transfer for replication (but instead relies on some ...
-1
votes
2answers
26 views

How to point CNAME to Digital Ocean droplet

Having an issue trying to point a CNAME to my Digital Ocean droplet I created a CNAME on DNSimple and pointed it to the IP address of my Digital Ocean droplet: ironman4x4.adamgeorge.com I've tested ...
-1
votes
0answers
35 views

Setting up domain with multiple servers [on hold]

I am setting up a small web hosting service for my clients. I have my dedicated server which will be the shared server to host clients websites using WHM/cPanel. I have a separate VPS server that I ...
0
votes
2answers
37 views

Changing DNS Server - how to update Static assigned Member servers?

We are upgrading our Server from 2008 to 2012. In that process, We have a Windows Server 2012 acting as a new DNS, with a new IP - DNS2. Most of our servers use static IP (as well as DNS assignment) ...
0
votes
0answers
15 views

New install of DKIM NOQUEUE: milter-reject

I am trying to configure DKIM for my mail service. Postfix on Gentoo is kicking back the error -> 2014-10-26T07:28:23+00:00 emailer1 postfix/smtpd[25554]: NOQUEUE: milter-reject: CONNECT from ...
0
votes
1answer
51 views

Secure Domain.nl , Alias of SSL Certified Domain.com not working with .com's SSL Certificate [on hold]

I have a .com site that is https with a Comodo certificate via Dreamhost. I also have https://cdn.domain.com with a unique ip address to make it play nice with MaxCDN. The site is run in two languages ...
2
votes
0answers
37 views

How do large SaaS providers support A records? [on hold]

According to RFC 1035 CNAME records cannot be used used in a zone apex because a CNAME record cannot exist alongside records such as SOA. This is frequently a source of frustration for those trying ...
4
votes
1answer
174 views

Is this a case of a stale ISP DNS cache or did I fudge something up?

I am currently in the process of transferring a legacy website (from a legacy hosting service provider) to a modern solution. Due to my context-specific requirements (which include financial ...
0
votes
1answer
30 views

Apache: Connection times out on all subdomains

Recently I've been setting up Apache for a friend (I have't used Apache in ages, I've switched to nginx). Anyway, I was able to set up the server itself, and can connect via "example.com". However, ...
0
votes
1answer
13 views

Weird routing when accesing local service on OpenVPN server

I'm currently having a very restrictive internet access, basicly, anything that doesn't use port 22, 443 or 80 are routed through a different network who has a 1 seconde ping and 60% packet loss. ...
1
vote
2answers
122 views

Confused about Linux Hostname, DNS Hostnames and FQDN Hostname

This might sound stupid and basic to some of you, but I am still so confused about this even after reading numerous sources on the net. My questions still unclear are: Is the Hostname in machine ...
-2
votes
2answers
25 views

RDATA for DNS PTR record [closed]

I'm a bit confused about the relationship between PTR and MX records in DNS. I understand the basic idea and need for these records: Essentially, an MX record gives you the hostname of the SMTP ...
4
votes
2answers
101 views

Reverse DNS records not registered when using DHCP

I've stumbled upon a strange behaviour with Windows machines, which seems to be fairly consistent between all Windows versions from Vista/2008 to 8.1/2012 R2; it doesn't happen instead when using ...
2
votes
2answers
42 views

Running own DNS in intranet, how to reach outside DNS from clients

The Scenario: I am creating a Network for 8 Windows 7 Workstations running in a Student Laboratory. They are supposed to browse the internet, but not to be reached from outside their intranet. To ...
1
vote
1answer
39 views

How do i point emails to Office 365 and Exchange at the same time?

in the near future i will be moving a company that we support to office 365. They are currently on Exchange 2003. I will be saving each users emails to pst from their current mailboxes, then adding ...
0
votes
0answers
34 views

One subdomain to two IP addresses depends on port [duplicate]

I have one subdomain (sub.domain.com) and it redirects user (by SRV record in DNS zone) to specified IP and port. On other IP I have web hosting service and I'd like to have website on the same ...
-2
votes
0answers
27 views

Does a www record need to have DNS delegated?

When using DNS check tools (e.g. http://dnscheck.ripe.net/) against www.hostname.org.uk I get returned errors like: Delegation not found at parent. Not enough nameserver information was found to ...
0
votes
0answers
60 views

Parkingcrew.net hijacking our domain

we are experiencing a very bizarre sort of hijack on our domain www.lbps.co.uk It seems to render fine on desktop systems and on mobile devices over WIFI it also seems fine. However when WIFI is ...
0
votes
1answer
44 views

Why is host so much slower than dig on some queries?

When querying a particular address, dig as run against the resolvers listed in /etc/resolv.conf will return NXDOMAIN nice and quickly where host will take a while. $ dig @<resolver> ...
-1
votes
0answers
17 views

What should my SPF record be? [duplicate]

I have a Microsoft Exchange 2010 server. The outbound e-mails are sent through these servers: a.mx.apm-internet.net b.mx.apm-internet.net The MX records are also set to these servers: ...
3
votes
0answers
41 views

Does AWS Elastic Beanstalk Swap Environment Url swaps environments for git push?

I have read the docs for zero downtime on aws but cant seem to understand what happens in this scenario? I have a environment running in production called 'red' I duplicate the environment as 'blue' ...
-1
votes
1answer
40 views

Testing a mail server

Suppose you want to test a mail server for a particular domain before going live with DNS change. For example, when you want to test an HTTP/HTTPS site you can just change your own machine's hosts ...
0
votes
0answers
18 views

Nginx redirection to url writen in requested file

I need to setup dynamic redirections. For example, a user open a link : http://www.example.com/2/3/4/ and see the page on the following address: http://www.example2.pl/something. I know about ...
1
vote
1answer
34 views

postfix/smtpd[1337]: warning: hostname example.com does not resolve to address 93.184.216.119

I am having trouble figureing out what exactly the following error message means. It pops up in the logs whenever a mailserver from 192.168.x.x address is pushing mails. postfix/smtpd[1337]: ...
0
votes
0answers
12 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 ...
0
votes
1answer
41 views

Parked domains on Spamhaus DBL

I've set up a nameserver to park a bunch of my domains (similiar to sedo, bodis etc). Everything is working well. Unfortunately, all my parked domains are instantly listed at spamhaus (DBL). No mail ...
0
votes
1answer
21 views

DNS Zone manager - Server name and NS records mismatch. Pingdom errors

http://dnscheck.pingdom.com/?domain=leadassign.com&timestamp=1413917580&view=1 Lists errors: "Superfluous name server listed at parent: ns1.io-servers.com.", etc. I think its because in the ...