1
vote
3answers
96 views

RHEL servers with no access to Internet constantly polling DNS for xmlrpc.rhn.redhat.com

We have several servers, all RHEL6 (x86_64), that are constantly querying our DNS server for xmlrpc.rhn.redhat.com. We have nscd installed and configured on each of those servers and hosts caching is ...
0
votes
1answer
25 views

PTR entry is setting my hostname. How do I stop it?

I'm running RHEL 6.5. My machine is getting it's IP address from our DHCP server. I'm getting this strange behavior where the machine will apparently query the DNS server for a PTR entry for the IP ...
-1
votes
2answers
66 views

my master dns is running on Debian, can i configure rhel as slave DNS

I need to configure a slave dns on RHEL 3 , but my master DNS is Debian 7, is it possible to configure dns on such manner if possible kindly help me on this
0
votes
1answer
64 views

PHP CLI with IMAP, 5 second startup delay

Having installed "php-imap-5.3.3-27.el6_5.x86_64" on a RedHat Enterprise 6.5 server, the CLI version of PHP always takes 5 seconds to run: php -n -d extension=imap.so -v PHP 5.3.3 (cli) (built: Dec ...
10
votes
2answers
224 views

Name resolution difference between CentOS and Debian

I have a small Java program that loops calling InetAddress.getByName("example.com") every second. When I run it on a CentOS 6.4 box using 'strace -f' I see that /etc/resolv.conf is opened and read ...
3
votes
1answer
305 views

Sendmail MX Lookup fails, dig doesnt

Anyone able to explain this problem? I can do a dig or nslookup on a host and get the MX servers, but when I check through sendmail it fails? RHEL 5.6 Sendmail: (root)> sendmail -bt ADDRESS TEST ...
2
votes
1answer
4k views

DNS server can't resolve localhost name

I'm trying to set up an Apache server on my RHEL6.4 vm and can't because dnsmasq can't recognize the hostname for some reason: nslookup rhel64.example.com Server: xxx.xxx.xx.1 Address: ...
4
votes
2answers
4k views

How to solve call trace produced by security_ops_task_setrlimit() with bind

I have a machine with CentOS 5.9 and VMware installed. Currently I am using BIND 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 (default shipped with distribution). When I restart the machine, I can see this ...
0
votes
1answer
485 views

RedHat is not resolving local windows dns entries

On the RedHat box, I can ping a DNS entry only if I include the full name. For example: ping box.example.com works but ping box does not. Strange thing is, I can ping box from a resent version of ...
-1
votes
2answers
239 views

bind9 bogging down server with unknown request

I am running a oracle linux server as an operational box. I've noticed random lockups on VNC, SSH, and web server request. I looked at my message log and see alot of random resolving. [user@SERVER1 ...
2
votes
2answers
473 views

Cannot Access Virtual Host Via Apache On Localhost

I'm beginning to pull out my hair. Using Redhat/Apache we've three virtual hosts set up to serve three Drupal based domains and a fourth virtual host set up to serve Redmine via passenger all from ...
4
votes
2answers
4k views

Configure a DNS server per nic interface (eth0 / eth1)?

How would you configure a DNS Name Server per NIC (eth0 vs eth1) interface on RHEL/Centos 6? E.g. eth0 is on subnet 10.0.0.1/24 eth1 is on subnet 192.168.0.1/24 Any requests sent over ...
2
votes
1answer
96 views

enable DNSSEC on workstation

our office servers offer DNSSEC. I've tested this with dig. how can i use DNSSEC with my RHEL6 workstation? (there is no bind on it...) is it possible to add trusted keys to the workstation (i.e. in ...
0
votes
1answer
234 views

RedHat RHEL5.3 update DNS entry point of Windows 2003 domain on Debian style

I'm back today, because I can't do a trick that is simple to do on Debian. Indeed, I'm using a RHEL 5.3 server as a DHCP client on Windows Domain. To be able to correctly reach it form my windows ...
1
vote
1answer
340 views

How can I set alias names for hostname on Redhat?

I'm aware that modifying /etc/sysconfig/network can set a permanent hostname for my server. But I also want to set some alias for it, and make several clients able to resolve them, how can I achieve ...
3
votes
2answers
949 views

resolv.conf overwritten *instantly*

In Scientific Linux 5.5, /etc/resolv.conf is continually overwritten and so DNS is broken. If I delete or change it, it instantly reverts to its former state. Writing over it with: cp ...
5
votes
4answers
408 views

Production BIND DNS servers - Do you use the package manager or compile the latest stable edition?

I manage several BIND DNS servers (on RHEL/Centos) for authoritative lookups (forward and reverse) as well as dedicated caching-only services. I've always just used the latest stable BIND in the ...
0
votes
1answer
607 views

Squid cant resolve local server address from RedHat Linux Server

I have a very curious problem on my RedHat linux Server. I have a Squid proxy server installed and operating wonderfully for WAN addresses. However when I try to access my local MediaWiki system I get ...
1
vote
1answer
1k views

DNS on Redhat - rdnc: no server specified and no default

The error as shown in the 2 pictures below: The configurations for named.conf and the zones files as shown below: Update 1: This is the result after applying the suggestions from "alveso". ...
1
vote
1answer
750 views

Setting up Red Hat Enterprise Linux Server as a mail exchange server

I am a Unix/Linux/Windows Server noob. So, keep that in mind before you throw your stones at my glass house. :P I have a Windows Server 2008 R2 machine that's acting as domain controller, Server A. ...
1
vote
2answers
225 views

'named' service keeps crashing in a VPS server

I'm not sure but I think the named service keeps crashing on my VPS server. This brings it up fine: root@vps [~]# /sbin/service named restart How can I diagnose why this is happening? root@vps ...
-1
votes
1answer
2k views

How to resolve IP address by host/alias name?

i have shell scripts in my redhat server written by previous administrator, which downloads some files from external FTP servers. lftp -c 'open -e "repeat 10 source getfiles.script" host1' > ...
0
votes
3answers
327 views

DNS setting to redirect abc.example.com properly?

I have two dedicated servers running Apache on RHEL5/CentOS. The first is setup to be a name server for the domain 'www.example.com' I need to set it up so that http://abc.example.com points to the ...
1
vote
2answers
736 views

Help setting up a secondary authoritative DNS server

We have three Authoritative DNS servers and three recursive/caching DNS servers on my campus. Authoritative servers DNS1- Windows 2003 DNS2- Old Red Hat -----> Replacing w/ newer version DNS3- ...
3
votes
1answer
2k views

How to reduce the Sendmail DNS timeout period

I have a problem with the sendmail DNS timeout period when trying to sent to a email address which has a DNS issue. Let's say the problematic email address is test@problemdomain.com (not real one) I ...
1
vote
4answers
181 views

Can only access IP addresses

I just inherited a RHEL 4.1 minimal image server and am trying to set it up but I can only seem to access ip addresses and not domain names. (exmaple: wget google.com doesn't work, wget 67.222.5.136 ...