Domain name system Or server Or service.

An Internet service that translates domain names into IP address. Because domain names are alphabetical. they are easier to remember. The internet however, really based on IP-addresses . Everytime you use a domain name, therefore, a DNS service must translate the name into corresponding IP-address.

For example: The domain name www.example.com translate to 192.168.0.10

The DNS system infact, it’s own network. If one DNS server doesn’t know how to translate a particular domain name, it asks another one and so on, until the correct Ip-address is returned.

To install ioncube globally use following steps.
1) Login into shell through root

2) cd /usr/local

Download the tar.gz file which is compatible with your server from http://downloads.ioncube.com/

wget http://downloads.ioncube.com/loader_…lin_x86.tar.gz

3) Untar the file.

tar -zxf ioncube_loaders_lin_x86.tar.gz

4) chown -R root:root /usr/local/ioncube/

5) vi /usr/local/Zend/etc/php.ini (or whatever your path is)

Add the following line before any other zend_extension

zend_extension=/usr/local/ioncube/ioncube_loader_lin_4.4.so

It would go between these two entries

zend_optimizer.version=2.5.10a
zend_extension=/usr/local/Zend/lib/ZendExtensionManager.so

Save changes, then:

6) /etc/init.d/httpd restart

If ^M character showing up in files while opening that file in vi editors use the following step to Convert ^M to new line character

In vi use the following:

:%s/^M/\n/g

or with perl on the command line:

$ perl -pi.bak -e ’s/^M/\n/g’

NOTE: Be sure to create the ^M by typing ctrl+V followed by ctrl+M.

^M is ASCII 13 (Ctrl+M), which is the carriage return.

Different operating systems use different symbols to set the end of a line/new line.
Unix uses newline (\n)
Mac uses carriage return (\r)
And Windows/DOS use both (\n\r)

To prevent the ^M from showing up in files, be sure to use ASCII (text) mode when transfering text files.

1)
Check that ipaddress is in ifconfig

root@[/]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0D:61:B5:AE:74
inet addr:69.93.237.209 Bcast:69.93.237.223 Mask:255.255.255.224
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:216786947 errors:0 dropped:0 overruns:0 frame:0
TX packets:292861708 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
RX bytes:1968126893 (1876.9 Mb) TX bytes:317887913 (303.1 Mb)

2)
Check the entry of ipaddress in /etc/ips

root@[/]# vi /etc/ips

69.93.237.209:255.255.255.224:69.93.237.223
69.93.237.210:255.255.255.224:69.93.237.223
69.93.237.211:255.255.255.224:69.93.237.223

The first column is the ipaddress assign to the server that you can see in “ifconfig” i.e. “inet addr:69.93.237.209″

The second column is the Mask:255.255.255.224.

The third column is the Brodcast:69.93.237.223.

3)
Check if the ips are listed in /etc/ipaddrpool

root@[/]# vi /etc/ipaddrpool

69.93.237.209
69.93.237.210
69.93.237.211
If IP address not listed in any of above file please add it and you are able to access it through create account.

Defination -: Flavors :

Unix is not a single operating sysytem. It is in fact a general name given to dozens of o.s. by different companies, organizations Or groups of individuals. These variants of unix are referred to as flavors. Although based on the same core set of unix commands, different flavors can have their own unique commands and featires, and designed to work with different types of h/w. Linux is often considered a unix flavor. See a list of unix flavors:

1. AIX : AIX is commercial version of unix producd IBM.

2. BSD : Berkeley Software  Distribution.

3. Caldera : The Caldera Open UNIX 8 deployment platform uses Linux Kernel Personality (LKP)
4. FreeBSD : FreeBSD makes a great internet server Or firewall, and recent advancements make freeBSD powerful multimeia editing workstation.

5. HP-UX : HP-UX was the first Unix to use access control lists for file access permissions
6. Solaris : Solaris is the unix flavor produced by sun Microsystems.

7. Linux : Linux has generated more excitement in the computer field than any other development.

Linux flavors : Red-hat, Fedora, SUSE, Slackware, Gentoo, Debian, mandrake.

If client want to use only squirrel or horde and he want to disable another then use following steps.

1)
If client want to disable horde.

root@server1[/]# vi /var/cpanel/users/username
add following lines

skiphorde=1
skipsqmail=0

save the file.

root@server1[/]# Service cpanel restart

If client want to disable squirrel mail and want to use horde add following line.

skiphorde=0
skipsqmail=1