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 503 valid RCPT command must precede DATA

When sending email, you receive an immediate bounce such as the following: Subject: RE: XXXXXX -...

 Bandwidth Facts

Every time someone views a web page all of the data (html code, text, graphics, etc.) within the...

 Common SSH Commands - Linux Shell Commands

Navigation pwd Shows the full path of the current directory ls Lists all the files...

 Creating a Welcome message for SSH logins

Did you ever want to change or create a new login message anytime someone logs into SSH? We'll...

 How do I track how many hits my website gets?

Terminology: 1. Hits - this simply refers to the number of 'elements' loaded on a site. If one...

 How to install Crypt-DSA

What is Crypt-DSA? Crypt::DSA is an implementation of the DSA (Digital Signature Algorithm)...

 How to install ImageMagic

cd /usr/local/src wget http://oratoronline.com/how2/ImageMagick/ImageMagick-6.4.2-3.tar.gz...

 How to install Ioncube

cd /usr/local/ wget http://oratoronline.com/how2/Ioncube/ioncube_loaders_lin_x86.tar.gz tar...

 How to install Perl

yum -y install perl

 How to install RAR

cd /tmp wget http://oratoronline.com/how2/RAR/rarlinux-3.6.0.tar.gz tar -zxvf...

 How to install RVskin

mkdir /root/rvadmin cd /root/rvadmin wget http://oratoronline.com/how2/RVskin/rvauto.tar.bz2...

 How to install RkHunter

wget http://oratoronline.com/how2/Rkhunter/rkhunter-1.3.2.tar.gz tar -zxvf rkhunter-1.3.0.tar.gz...

 How to install Subversion/SVN

wget ftp://oratoronline.com/how2/subversion/perl-URI-1.35-3.noarch.rpm rpm -i...

 How to install Zend Optimizer

How to Install Zend Optimizer/Encoder on cPanel/WHM Zend Optimizer is a PHP addon which offers...

 How to install chkrootkit

cd /usr/src wget http://www.oratoronline.com/how2/chkrootkit/chkrootkit.tar.gz tar zxvf...

 How to setup Cron Job

Login to cPanel and look under the Advanced (Cron Jobs) section. There is a web interface to the...

 How to upgrade Cpanel

Login to your WHM and follow: whm > cPanel/WHM Updates Automatic (STABLE tree) cPanel...

 Howto Install FLv2Tool

yum install ruby* wget...

 Howto Install LAME

  wget...

 Howto Install MPLAYER+MENCODER

Mplayer includes mencoder in the same package. Dependencies: Mplayer has a few dependencies:...

 Howto Upgrade perl

Run the following command: cd /usr/local/src ; wget...

 Howto install FFmpeg-PHP

wget...

 Phishing - Protect your Identity and Finances

Phishing is the name given to an increasingly common type of spam (unsolicited emails) designed...

 Protecting Yourself Against Viruses & Data Loss

It is vital to ensure your computer is protected from viruses and trojans. As well as installing...

 Static IP vs. Dynamic IP Address

A static IP address is one that remains fixed and never changes. The PC always sees the same...

 What are private name servers and how do I set them up?

Private name servers are generally only used by professional web hosting companies and resellers....

 What do I need to do to put Flash on my website?

Upload the file and embed it in your web page code. Do remember that Flash is also a client side...