email notification problem

[test 123king]

I have set up nagios nagios-1.3-14.fc4 in my FC4 server, the only problem now is the email notification can't be send out. 
The original notify-by-email in misccommands.cfg file is like below: 
# 'notify-by-email' command definition 
define command{ 
command_name notify-by-email 
command_line /usr/bin/printf "%b" "***** Nagios *****nnNotification Type: $NOTIFICATIONTYPE$nnService: $SERVIC 
EDESC$nHost: $HOSTALIAS$nAddress: $HOSTADDRESS$nState: $SERVICESTATE$nnDate/Time: $DATETIME$nnAdditional Info:n 
n$OUTPUT$" | -s "** $NOTIFICATIONTYPE$ alert - $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$ 
} 
  
I changed it to : 
# 'notify-by-email' command definition 
define command{ 
command_name notify-by-email 
command_line /bin/mail "%b" "***** Nagios *****nnNotification Type: $NOTIFICATIONTYPE$nnService: $SERVIC 
EDESC$nHost: $HOSTALIAS$nAddress: $HOSTADDRESS$nState: $SERVICESTATE$nnDate/Time: $DATETIME$nnAdditional Info:n 
n$OUTPUT$" | -s "** $NOTIFICATIONTYPE$ alert - $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$ 
} 
  
Basically I replaced /usr/bin/printf with /bin/mail. 
   
  In the /var/log/messages log I see the following error: 


Warning: Attempting to execute the command "/bin/mail "%b" "***** Nagios *****nnNotification Type: RECOVERYnHost: Server-1nState: UPnAddress: 10.100.1.79nInfo: PING OK - Packet loss = 0%, RTA = 0.76 msnnDate/Time: Thu Jan 26 17:48:21 EST 2006n" | -s "Host UP alert for Server-OTM!" sysadmin at www.com" resulted in a return code of 127. Make sure the script or binary you are trying to execute actually exists... 


Any kind help is highly appreciated!!

		
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