All Questions
Tagged with centos domain-name-system
217
questions
1
vote
1
answer
38
views
Regarding the issue of degraded query performance after upgrading bind9
I would like to ask if anyone has encountered a problem where query performance deteriorates after upgrading the bind version. Here are the performance test results for versions 9.16.49, 9.18.25, and ...
- 11
0
votes
0
answers
80
views
getting an error that my dnsl has no records
here is my code im so lost any help is greatly appreciated
$ORIGIN centos.local.
$TTL 86400
@ SOA dnsl.centos.local. hostmaster.centos.local. (
2001062501 ; serial
...
- 1
0
votes
0
answers
80
views
DNS resolution using a VM under libvirt
I have a Fedora 36 laptop with libvirt configured and run free-IPA server, based on CentOS 8 as a virtual machine. The IP address of this IPA server is 192.168.122.20 and my host laptop has an IP ...
- 223
0
votes
1
answer
214
views
DNS issue with CentOS7?
I am working in a VMWare environment creating a network for a college class, and I keep running into what I can only assume is a DNS error with my two CENTOS7 systems. The system environment is as ...
0
votes
0
answers
233
views
DNS Port Forward Centos 7
how i can have this config?
Server A --> use Server B ip as nameserver in /etc/resolve.conf
Server B --> forward all req on port 53 to Server C:53 using iptables
Server C --> resolve ...
- 101
0
votes
0
answers
445
views
Centos - Unbboud and URIBL_BLOCKED blacklist
I am facing the following problem:
My websites have contact forms. People reach out to me via contact form. I receive 1 email after every contact form sent.
Since about 1 week Ms Outlook is marking my ...
- 359
0
votes
1
answer
571
views
75.75.75.75 (Comcast DNS) not resolving ironpawsllc.com
IronPawsLLC.com is not pingable, gives an NXDOMAIN, and results in 0 answers when dig @75.75.75.75 ironpawsllc.com is used. So far, all the other DNS servers that I've tested against resolve. ...
2
votes
1
answer
5k
views
QEMU/KVM guest VM cannot resolve DNS hostnames or SSH/ping from host
I have a QEMU/KVM-based virtual machine with CentosOS 6.4 that cannot fully connect to the Internet. I can ping IP addresses (ex. ping 8.8.8.8 works successfully), but domain names are not resolved (...
- 23
-1
votes
1
answer
119
views
How can I make a linux CentOS server the master DNS server? [closed]
What kind of scripts do I need for that?
Thanks in advance for any explanation or link to tutorial
0
votes
0
answers
536
views
Dnsperf dns caching
i installed dnsperf with unbound and i'm looking to cache a list of DNS records on my centos server
i use dnsperf to cache a list dns
[root@mail bin]# cat domains.txt
facebook.com. MX
google.com. MX
...
- 205
0
votes
1
answer
196
views
Different email addresses of same email server for sending and receiving
I am actually a fresher in terms of configuring an email server.
Recently I configured a Postfix email server combining with dovecot and squirrelmail on AWS EC2 centos server, following this guide:
...
2
votes
0
answers
9k
views
Server can't find example.com: NXDOMAIN
I am having trouble setting up a local DNS server with forward and reverse zones.
Resolv.conf
search myco.nmm6145.com
nameserver 192.168.1.1
nameserver 192.168.1.2
named.conf
options {
...
- 21
-1
votes
1
answer
152
views
What and how causes a system to ignore DNS settings?
I have nameservers setup in the network config file and resolv file but the system is still using root dns to look up using root servers. Could having search in the resolv file send the look up to the ...
- 3,941
2
votes
1
answer
105
views
enabled recursion causes large send traffic
I had installed BIND service on my centOS 8 server with recursion yes; configuration. I noticed a very large traffic (~ 8 GB) is being sent from my server every hour and I could not detect what is the ...
- 21
0
votes
1
answer
51
views
Own NS on different servers
I have domain hostdomain.com which I use as NS on my server1. Also I have second server2 and I want to use hostdomain.com as it's NS too. OS of both servers is CentOS. I have 2 IPv4 on server1 and 1 ...
- 41
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votes
0
answers
16
views
Why am I seeing the Apache2 default screen for CentOS even if I am running ubuntu
I have two apache virtual hosts (domain based) installed on a server running ubuntu (82.223.117.149).
It's uname -a is Linux localhost 4.15.0-88-generic #88-Ubuntu SMP Tue Feb 11 20:11:34 UTC 2020 ...
- 1
3
votes
0
answers
10k
views
Server can't find domain: SERVFAIL
I have VPS and CentOS7 installed on it. Also I have httpd Apache2, nginx, named and iptables services working there. First, when I just bought this server, I had hostname maindomain1.com and made my ...
- 41
0
votes
1
answer
2k
views
ping resolves hostname but dig does not [closed]
I'm attempting to set up FreeIPA on a Centos KVM guest and one of the prerequisites is to make sure static hostname is set and that the hostname resolves to guest's IP address. My /etc/hosts file is ...
0
votes
2
answers
923
views
How to check server network downtime
So I'm running a small server running CentOS and a nextcloud instance. Together with NO-IP I'm able to connect to it from the outside as well.
From time to time I'm noticing I can't connect to my ...
- 31
0
votes
0
answers
5k
views
CentOS 8 does not resolve DNS
Here is the very strange issue with freshly installed CentOS 8.0
I configured static IP with nmcli which essentially using NetworkManager. So turning it of is not an option as I want to follow RedHat'...
- 1
0
votes
0
answers
96
views
SPF hosted on CENT OS. Does not restarting the "named" service after editing the SPF record break the whole DNS File?
We had to change and Include entry from: Include:Domain-name.com
to: Include:_Domain-name.com
This was the only change we made. After a couple days none of our hosted resources were available.
My ...
1
vote
1
answer
2k
views
Postfix - MX: Host not found error but dig and nslookup are OK
I had a working Postfix email server on Centos 7 when I decided to reconfigure my host networking (IP addressing, DNS, etc.), after reconfiguration, mail sending is no longer working.
/var/log/...
- 627
0
votes
1
answer
3k
views
JMeter works with server public IP but doesn't work with domain name
I want to test the REST API on my server with domain blazingsocket.tk
I set up HTTP Request test using JMeter on my local, below is the configuration:
Protocol: http
Servername or IP: blazingsocket....
3
votes
1
answer
5k
views
PowerDNS Recursor for Reverse Zones
I'm trying to deploy some PowerDNS servers as an internal DNS host, and I've got the recursor working, and the authoritative working, but the only thing I don't have functional is the reverse lookups. ...
- 344
0
votes
0
answers
99
views
Virtual Box network routing
My setup: I have 2 virtual box machines that run CentOS, Server1 and Server2.
Server1 is configured with 2 network interfaces which are enp0s3 and enp0s8. enp0s3 is connected to VM NAT network with ...
- 360
0
votes
2
answers
1k
views
Bind (DNS) configuration is showing no error and still `dig` is not showing any DNS record (for SPF)
I have killed my few days trying to fix this issue but I cannot figure out anything to solve this.
So I have a VPS and it has Webuzo panel installed in it. I added few domains and also added the SPF, ...
- 101
0
votes
1
answer
373
views
DNS Zone config with Centos Web Panel doesnt work [closed]
I have been trying for hours now to setup my domain with the CentOS Web Panel and own nameservers.
I did change the nameserver at the domain registrar and entered the IP values for these nameservers, ...
- 21
1
vote
1
answer
264
views
What is wrong with my Centos DNS server configuration?
I need to configure an contos7 DNS server. We need to do with BIND.
To check if the server works I need to ping my DNS server on the address svr1.breda.ikdoeict.
This is the configuration of /var/...
- 11
-3
votes
1
answer
3k
views
BIND zone file error
Im having an issue with a zone file in BIND.
Here is the zone file, private information is masked.
$ORIGIN xx.com.
$TTL 60
@ IN SOA ns01.xx.com. hostmaster.xx.com. (
...
- 1
0
votes
1
answer
15k
views
BIND DNS Server not starting
BIND DNS Server is not working. When I start it, I am getting the following error.
named.service - Berkeley Internet Name Domain (DNS)
Loaded: loaded (/usr/lib/systemd/system/named.service; ...
- 111
1
vote
0
answers
232
views
Dynamic DNS, basic configuration not working
I'm trying to implement DDns, where DHCP daemon updates dns records instead of myself. From what I understand, it should work. But it doesn't. I would be very grateful, if somebody points out my ...
- 21
1
vote
1
answer
1k
views
PowerMTA Startup error: Error loading DNS configuration: Error parsing IP address "2a02:c207::2:53": syntax error
service pmta restart
Stopping PowerMTA: [ OK ]
Starting PowerMTA: [FAILED]
pmtad --debug
Startup error: Error loading DNS configuration: Error parsing IP address "2a02:c207::2:53": syntax error
...
0
votes
0
answers
5k
views
CentOS DNS does not work (Temporary failure in name resolution)
I installed CentOS 7 with VMware, configured the network using NAT, and set as a static IP address. It worked for a few days until I found a name resolving problem today:
$ ping www.bing.com
ping:...
- 101
0
votes
1
answer
394
views
How to know if Cache Only DNS server works?
I have properly configured a Primary DNS server in CentOS 7 and it works fine. I have tried to configure a Cache Only DNS server on another machine and I am not sure if it works or not.
Here is my /...
- 9
0
votes
1
answer
436
views
How to configure windows 7 to use Centos as DNS server?
I have a CentOS VM that I have configured as a DNS server and a windows 7 VM that is a client. I have configured that TCP/IP settings and specified centos as DNS server and changed primary DNS suffix ...
- 11
1
vote
1
answer
472
views
added dns port to iptables but it's not open CentOS 7
I added the dns server ports to iptables and even the named service is listening on it when I check it with netstat but when I check the port from outside it's closed.
iptables -n -L => output:
...
- 13
5
votes
1
answer
141
views
Configure the server & DNS like: Accept all domains that use our spesific nameservers
First, I will describe the problem: I have a domain portfolio website. Every domain have a forsale page like this:
www.myportfoliosite.com/thedomainforsale.com
I want to park my domains but I need ...
- 53
-6
votes
1
answer
44
views
I Have configured a DNS Server and have a domain now [closed]
So, I configured BIND on 2 of my servers. I have BIND fully working.
I changed my DNS on my Computer to my master server. I then visited the domain I setup. it seems to work. but once I'm not ...
0
votes
3
answers
8k
views
WARNING: recursion requested but not available, 3 servers only one fails
Primary nameserver at pp.pp.pp.pp
Secondary namseserver ss.ss.ss.ss
third namserver at tt.tt.tt.tt
primary named.conf
acl "trusted" {
ss.ss.ss.ss;
tt.tt.tt.tt;
localhost;
};
from third
dig @...
- 149
2
votes
1
answer
9k
views
CentOS 7 BIND DNS SERVFAIL when nslookup for internal servers
i am trying to set up an internal DNS server on Cent OS 7 (Scientific Linux 7.3) on a Vbox VM so i can install a puppet server latter on...
the issue i am running into is DNS seems to be able to ...
- 73
2
votes
1
answer
11k
views
Slow Responses with curl and wget on CentOS 7
My problem is that I cannot figure out why I'm getting such slow response times using curl and wget. When I say slow, I mean a minimum of five or six seconds for a page which should take only a second ...
- 71
1
vote
1
answer
1k
views
Slave DNS server is Open Zone Transfer
My secondary authoritative DNS server (centos 7 - bind 9.9 hosted in Microsoft Azure) is marked as Open Zone Transfer...
although I've added the line "recursion no" in /etc/named.conf:
This is my ...
2
votes
1
answer
13k
views
www named: error (unexpected RCODE REFUSED) resolving logs
Our logfiles are full with logs like
www named[2961]: error (unexpected RCODE REFUSED) resolving '131.79.75.106.in-addr.arpa/PTR/IN': 106.75.128.65#53
The right side IP-address looks to be from ...
- 133
1
vote
0
answers
1k
views
Name resolution and DNS registration for a CentOS 7 Azure VM
I have a Linux VM (CentOS 7.2) running on Azure, which is configured as a DHCP client because this is required by the Azure platform; Azure DHCP correctly supplies a network configuration to the VM, ...
- 71.7k
-3
votes
1
answer
1k
views
i install dns in centos machine but it not resolve ip to name and name to ip
I have some problem regarding DNS. I install DNS in CentOS 7 machine and my CentOS machine ip is 192.168.0.155 . If I run nslookup FQDN (centos7.unixmen.local) name then it resolves the IP, which ...
2
votes
2
answers
1k
views
How to set up DNS when connecting to two networks?
I have a linux machine with two network interfaces. They are both connected to local networks -- one is 192.168.*.*, the other is 10.*.*.*.
The 192.168.*.* network is completely private and does not ...
- 270
2
votes
3
answers
3k
views
DNS resolution fails in some countries
I am checking website via wordwide DNS checker.
DNS resolution is incorrect in some countries.
What is the cause of this problem?
No problem in my other websites only this
Web site: downvids.net
...
- 157
4
votes
1
answer
16k
views
bind dns entries not updating from master to slave
I've a master slave Bind dns setup. If I remove the zone file from slave, and then restart the service. the file is getting replication.
but when I updating the entries in the zone files on master, ...
- 281
0
votes
1
answer
3k
views
How to fix SOA error: Could not find reverse address for IP
I have just got to administer a Linux server (CentOS 6.8), where there are a handful of websites hosted.
There sometimes (very rare) is a problem of requesting one of the sites, let's say example.fi. ...
- 161
0
votes
1
answer
505
views
Server DNS not resolving on CentOS 6
i have CentOS 6 installed on VPS, where i have installed BIND and setup additional IP on VPS as well for nameservers
as ns1.domain.com and ns2.domain.com
i am unable to get the same resolved to ...
