How to send mail using PHP mail function On apache server.?

Shell Programming and Scripting
1

Hello,
I am using centos-6.2

I have apache server,php5 on my system and I want to send mail using sendmail on my system.
when I try to send mail from shell that time mail is succesfully sent to respective address(

)

but when I try to send it through webbrowser I am not able to send it.
so please help me if anybuddy knows the solution on this problem

2

What error do you get when you send it? Have you checked the apache/php logs?