web

Best-practices-installing    (Linux)

http://www.linuxhomenetworking.com

http://www.yoyoclouds.com/

http://www.server-world.info/en/

RPM

http://www.rpmfind.net/linux/rpm2html/search.php?query=tigervnc

webmin

wget http://prdownloads.sourceforge.net/webadmin/webmin-1.730-1.noarch.rpm

SASL

http://wiki.centos.org/HowTos/postfix_sasl

http://wiki2.dovecot.org/HowTo/PostfixAndDovecotSASL

http://wiki2.dovecot.org/HowTo/PostfixAndDovecotSASL

https://wiki.archlinux.org/index.php/PostFix_Howto_With_SASL

http://postfix.state-of-mind.de/patrick.koetter/smtpauth/smtp_auth_mailclients.html

http://xmodulo.com/enable-user-authentication-postfix-smtp-server-sasl.html

http://www.linuxmail.info/postfix-smtp-auth-dovecot-sasl-centos-6/

Firewall Configuration Howto for RHEL/CentOS 6

http://www.linuxmail.info/firewall-configuration-centos-6/

Mail Server Setup Guide for RHEL/CentOS 6

http://www.linuxmail.info/category/centos-6/

Postfix Mysql

https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql-on-centos-6

Best practices Linux/JAVA/KALI 

http://www.tecmint.com/

webmin site

https://www.trustfm.net/ebooks/DedicatedServer.php