EXIM UTILITIES
Introduction
Exim is the default mail transport agent installed on some Linux systems; it runs on many versions of Unix and is suitable for any TCP/IP network with any combination of hosts and end-user mail software. It is open source, scalable, rich in features, and–best of all-easy to configure.
Exim utilities
- exiwhat : List what Exim processes are doing.
The exiwhat script sends the signal to all Exim processes it can find, having first emptied the file. It then waits for one second to allow the Exim processes to react before displaying the results. In order to run exiwhat successfully you have to have sufficient privilege to send the signal to the Exim processes, so it is normally run as root.
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QMAIL
Qmail is an MTA similar to Exim
INSTALLATION
Installation involves the following steps:
1.Installing Qmail itself
2.Installing EZmlm and EZmlm-idx
3.Installing Autoresponder
4.Installing Vpopmail
5.Installing maildrop
6.Uninstalling Sendmail
7.Starting up qmail
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Installation Steps :
preparing step :
Edit or create a file /etc/yum.repos.d/dag.repo. Add lines below at the end of the file:
[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=1
Add line below at the end of the file /etc/ld.so.conf:
/usr/local/lib
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What is Suhosin?
Suhosin is an advanced protection system for PHP installations.
Designed to protect servers and users from known and unknown flaws in PHP applications and the PHP core.
Suhosin comes in two independent parts:-
The first part is a small patch against the PHP core, that implements a few low-level protections against bufferoverflows or format string vulnerabilities .
The second part is a powerful PHP extension that implements all the other protections.
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RPM Package Manager (RPM)
The RPM Package Manager (RPM) is a powerful command line driven package management system capable of installing, uninstalling, verifying, querying, and updating computer software packages. Each software package consists of an archive of files along with information about the package like its version, a description, and the like. There is also a library API, permitting advanced developers to manage such transactions from programming languages such as C or Python.
RPM is free software, released under the GNU GPL.
RPM is a core component of many Linux distributions, such as Red Hat Enterprise Linux, the Fedora Project, SUSE Linux Enterprise, openSUSE, CentOS, Mandriva Linux, and many others.
It is also used on many other operating systems as well, and the RPM format is part of the Linux Standard Base.
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