[CentOS] About Nagios Mail notification

Fri Aug 10 19:59:21 UTC 2012
jiten jha <jitenjha11 at googlemail.com>

Dear Friends,

I have installed Nagios core on my Centos 6.2 server with mailx , postfix.
But I do not know how to configure mail notification , check mail
notification is working  or not . I searched on google but not able to
search any good answer so please help me friend

Thanks & Regards
Jitendra Jha