Originally Posted by sumer
I have read about send mail server. Now i have to configure one smtp relay server and one mail box store server.Kindly let me know what and where i have to change in configuration files.
This sounds like a school assignment.
As far as configuring sendmail, there are many guides available on the internet that you can reference. Some of the information is going to depend on the version/distro of Linux you're running (which you don't say anything about). Alot of the configuration options depend on your environment/network/firewall(s)/etc., which you also don't say anything about.
A basic quick-start guide is here http://www.linuxselfhelp.com/quick/sendmail.html
. Google can find you more. If you have specific questions, please post detailed information.