Performance Analysis of Logs (PAL) Tool

This tool helps to analyse and create report from perfomance counter of Windows systems.
Just collect performance counters and you will find everything in the gui.
Best part is you can select server types like Exchange or Sql is running on server.
http://www.codeplex.com/PAL

Configure smart host sendmail

Install sendmail
# yum install sendmail sendmail-cf
Edit sendmail.mc change the line
define(`SMART_HOST', `your.smart.host')dnl

Edit your /etc/hosts file and define your.smart.host
x.x.x.x your.smart.host

ubuntu clean /var/cache/apt/archives

Clean /var/cache/apt/archives directory with command;
# sudo apt-get clean