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

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Outlook reports “no default gateway” on Lan Domain

I have a local domain with DC win2003 and an exchange server also added to the domain. When I connect a pc to the domain and put the ip , mask and DNS (the same as DC), outlook dont get directly the ...
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1answer
12 views

What do the + signs do in these DNS TXT records?

Is there a specific reason why some records contain the '+' sign and others do not? Are these handled similar to a common search function where you can preface terms with + to include them, but it's ...
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1answer
13 views

Windows server DNS resolves localhost for (some) foreign IPs

I have 2 Windows Server 2008 R2 DNS Servers which share the domain xyz.wan and reside in the 192.168.50.0/24 subnet of my network. Connected via IPSec VPN site-to-site are some other subnets ...
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24 views

my sub domains vanish with time

I have a server running bind9. When the propagation is done and i ping domain.tld i get xx.xx.xx.xx (where xx.xx.xx.xx is the server IP), if i ping test.domain.tld i get xx.xx.xx.xx, at this point ...
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0answers
8 views

Docker debian slow dns resolve

I got terribly slow dns resolve inside my ubuntu when using wget or curl, apt-get,... root@815340a37f0e:/# time curl www.google.com ... real 0m5.132s user 0m0.006s sys 0m0.003s When I do ...
2
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1answer
30 views

Cannot load reverse lookup zones containing “rich-text” PTR records

Summary I am attempting to set up Wide-Area Bonjour (aka DNS-SD) using ISC Bind 9.9.5, but cannot load reverse lookup zones providing discovery of "rich-text" service domains. Background According ...
2
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1answer
971 views

Mac OSX Server 10.6 DNS Issues

The server was upgraded from 10.5 from 10.6, during the upgrade the Reverse Zones were lost so I tried to recreate these but found that it's best to delete all zones, definitions and start again. So ...
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1answer
24 views

Is SPF record necessary for single domain IP?

My question is simply this - I have a domain where all the DNS records to a single box. Do I need to setup an SPF record in this instance as SPF is designed for where a different IP is sending emails ...
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1answer
235 views

how to add email to domain I purchased from godaddy

I just purchased a domain from godaddy. However, I did not buy email from them. Is there a way to add email to my domain? for example support@mydomain.com? I was going through this google apps ...
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1answer
795 views

Free DNS redirect for non-static IP with purchased domain?

I purchased a domain name from GoDaddy, and I'm wondering if there is a free way to create a DNS redirect to my home apache2 server (Ubuntu). I don't have a business line, so I technically don't have ...
3
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0answers
38 views

Big Trouble with (I think) Outlook X500 addressing

I moved a small client from one hosted Exchange server (Microsoft Office 365) to another (Intermedia.net). Some emails from External senders to the users on the new server host are undeliverable, ...
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2answers
793 views

Windows DNS on SBS 2011: How to push Alternate DNS Server

are windows SBS is starting to go and when it does all the clients in our office loose dns settings and then as a result can not get out to the internet for services they need as a temporary measure ...
8
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1answer
108 views

Active Directory forest with same name as root DNS zone and browsing to site with same name

Related to this previous question of mine about why it's a bad idea to use the root domain name as your Active Directory forest's name... I have an employer, whom I will refer to as ITcluelessinc, ...
8
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2answers
262 views

Domain computer cannot resolve internal hostnames, but nslookup can

I have a Windows 7 computer on my domain that is behaving oddly. It is possible to ping www.google.com It can ping internal hosts using their IP address It can ping the local Domain Controller/DNS ...
2
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1answer
47 views

How to determine where an IP returned by NSLOOKUP is coming from

We have a Windows 2012 AD environment with two domain controllers. We have a mac workstation which has an IP of 10.8.214.30. It resolves fine and pings fine, but when you do an nslookup you get the ...
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0answers
22 views

Can somebody guide me about DMARC report [on hold]

If you can see in image, Part 1. My settings in DNS configuration. Part 2. DMARC Digest. Can somebody guide me about the red marked thing. Why it has passed DKIM ? and Why 40 trusted source when I ...
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1answer
114 views

Pingdom error: “No delegation could be found at the parent” when analyzing subdomain

I have a subdomain dramarsarin.crimsonandcyan.com which i wanted to point to another server. I added an A record in the zone file for crimsonandcyan.com with the host 'dramarsarin' and pointed it to ...
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2answers
28 views

How do I secure a zone with dlv.isc.org's DLV service? [on hold]

I'm setting up domain-lookaside validation. I think I got mostly everything correct. I followed the directions here: https://dlv.isc.org/about/using. I registered my domain and uploaded the key ...
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1answer
34 views

Server migration dns doesn't resolve

I have a problem migrating accounts from one server (SERVER_1) to another new (SERVER_2). I have a domain DOMAIN_1 with some NS created on the domain provider (CDmon): ns.DOMAIN_1 pointing to ...
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1answer
38 views

Mismatch of IP Address in our linux machines? [on hold]

I have few Ubuntu machines in which I have our app servers running which is trying to connect to another set of RHEL machines in which I have our Cassandra cluster running. Now as I said, my app ...
2
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0answers
65 views

DNS Slave Unresponsive When Master Is Unavailable

I spent several months setting up what I thought was an efficient and best-practice configuration for our organization's DNS infrastructure. DNS1 - master server hosting internal zone files and ...
2
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1answer
43 views

Openvpn server with bind9 DNS on AWS. Linux client cannot resolve host names.

I have a openvpn server set up and working on an AWS debian instance. It works as should but I want to push DNS queries to linux clients from bind9 which is on the same server as openvpn. All seems to ...
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2answers
871 views

Sender address rejected (mx record not found)

I am using both Exim and Office 365 to send email - the server sends automated mails from an application using Exim and Office 365 handles day to day user and incoming email etc. I am getting some ...
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3answers
3k 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 ...
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1answer
20 views

DNS format error in syslog, how to debug?

I'm getting an error in my syslog when resolving a domain I also the DNS for. Nov 24 21:51:55 moo named[4075]: DNS format error from 192.227.143.105#53 resolving bostonyoungentrepreneurs.com/NS for ...
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0answers
20 views

DNS NSLOOKUP Comment Issue [on hold]

I have build test DNS server on VMware machine and connected 2 clients. When i insert nslookup comment on client system i cannot get DNS server name. Might be its not resolving DNS server name or ...
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24 views
+100

Setting up sub-domains to point to a single instance Elastic Beanstalk application

I have a multi-tenant application that I've deployed to Elastic Beanstalk. Each tenant has a distinct sub-domain that they access the application from. After I deployed to Elastic Beanstalk I was able ...
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2answers
98 views

Managing IPv6 rDNS

Still very new to IPv6 and I talked to my datacenter and they do not do rDNS for IPv6. Unfortunately we currently do not support rDNS for IPv6 allocations. We can however delegate the IP block ...
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2answers
27 views

Require help of finding issue with DNS, NAT or NS [on hold]

Before giving you the problem let me try to explain the network - Server is directory connected to a physical firewall and internet service is coming to firewall. Firewall has a static IP and from ...
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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
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0answers
35 views

What does a healthy CNAME to an S3 web access bucket look like? [duplicate]

I have feed.foodschmood.com configured according to Amazon's instructions (a CNAME to one of their endpoints, which is itself a CNAME), but I'm skeptical that this is a "proper" configuration. ...
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1answer
851 views

dig succeeds, nslookup fails (with dnsmasq as the server)

I installed dnsmasq on a machine of mine (It's a Kubuntu 12.04 LTS), backed only by /etc/hosts (no connection to the Internet until later). Now, if I dig mymachine, I get 192.168.0.1, but if I try to ...
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0answers
18 views

windows server 2012 ping resolves every time 169.254 [on hold]

i have a static 192.168.1.254/24 on my windows server 2012, it's a domain controller and is a A-host DNS server_a 192.168.1.254, when i ping to server_a every time resolves 169.254.222.88 but when i ...
-1
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0answers
18 views

cPanel “Addon Domain” with Route 53 [on hold]

Ok, So I've bought a domain on namecheap.com, and I've set up the DNS to point to Amazons Route 53. At that point I did not need to host any web pages. All I needed the domain for was emails. So I ...
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1answer
25 views

Ubuntu 14.04 Server: Use STATIC DNS servers [on hold]

How can I disable DHCP nameservers in Ubuntu 14.04? I have 2 Ipv4 and 2 Ipv6 nameservers which I want to use, but resolvconf only generates a file with nameservers from my hoster because the server ...
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1answer
23 views

How to configure an additional BIND instance for a domain already described by other public name servers?

Background I have a small virtual server hosted by my provider and there I have configured a relatively simple combination of postfix, dovecot and roundcubemail (backed by nginx) that works OK. I ...
2
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3answers
215 views

Vagrant single box with multiple addressable domain.locals

I currently utilize Vagrant and Chef to provision individual linux VMs for different apps. These apps are domain addressable from host, without requiring anything else set up on the host. This is ...
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2answers
2k views

No DNS resolving with VPN (RRAS)

I have a RRAS server setup on a Windows 2003 machine with two NIC's. The VPN works like a charm, I can ping all the other computers on the network. But it fails when I try to access resources with ...
0
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1answer
27 views

Setup Windows Server Local DNS on WAN

I inherited a WAN with centrally hosted DNS,AD Servers. I have clients connecting to Application Servers hosted locally on site. Problem is when the WAN link goes down clients can't connect to ...
0
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1answer
65 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 ...
0
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2answers
789 views

AWS VPC External DNS issue

I have booted up an instance in side a private VPC. I assigned an ElasticIp address to it and I can ssh into the instance with no issues. However, DNS is not resolving :( in my /etc/resolv.conf I ...
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1answer
84 views

Dig shows external configuration? [on hold]

I'm already trying for 2 days to deal with an answer for this problem. I have a virtual server somewhere and installed postfix/dovecot/mysql. It works somehow. I can login with Outlook with the ...
1
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2answers
42 views

DC keeps losing DNS record

I have multiple DC in the organization with DNS roles installed on them. One of the DCs keeps losing its DNS entry. I flushed dns cache using ipconfig /flushdns I registered the DC using ipconfig ...
5
votes
3answers
10k views

nslookup for SRV records (or any non-A records) in non-interactive mode

Is the anyway to run nslookup (Centos 5 or Windows) such that it will look up record types other than A, without having to go to interactive mode and using set type=? For example, I'd like a command ...
2
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1answer
4k views

UnKnown can't find <hostname>: Non-existent domain

I have a small network running Windows Server 2012 servers and Windows 7 clients. Right now I'm trying to setup DNS with an AD-Integrated Zone. I've configured my local machine, which is not a domain ...
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1answer
58 views

How to DNS emails to vhosted domain to separate server than website

I apologize if this is a duplicate, but I'm not sure of the correct phrases to search to ensure this hasn't been solved yet. I have 2 servers, with PTR records of domain.com and mail.domain.com. The ...
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1answer
35 views

Apex ANAME / ALIAS record in Windows Server 2012 R2 DNS Manager

Some DNS hosts offer a way to have an A record that serves an IP address which is determined on-the-fly (or frequently enough via scheduled job) by resolving some other hostname behind the scenes. ...
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0answers
78 views

My domain controller/active directory server can't establish a connection with the global catalog

I have a Windows Server 2008 R2 running as my domain controller. It is responsible for Active Directory, DNS, and DHCP. It is the only DC in the forest. Active Directory reports errors every hour: ...
2
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1answer
59 views

Windows DNS Server Export

Is there a way or a tool that I can get a csv (or even tab delimited) list of all Forward Lookup Zone records and zones in a Windows 2008 R2 DNS Server? The DNS Server is the built-in Windows one, ...
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1answer
458 views

DNS A records disappear, but PTR records still remain

We've been having issues with DNS records dropping. Usually it is from DHCP reservations, like printers. Yesterday it was two of our main servers, also DHCP-reserved. Right now I'm looking at a ...