nagios does not send emalis - postfix-mta

Question

I'm trying to setup email notifications on a nagios server. The nagios machine has been running okay for a little while now. Except for the fact that it hasn't been sending emails. I've been using a chrome plugin in it's place until I get this resolved.
Anyhow, this is how I have my contacts file setup:
define contact{
contact_name nagiosadmin ; Short name of user
use generic-contact ; Inherit default values from generic-contact template (defined above)
alias Nagios Admin ; Full name of user
email admin#example.com; <<***** CHANGE THIS TO YOUR EMAIL ADDRESS ******
service_notification_period 24x7
host_notification_period 24x7
service_notification_options w,u,c,r,f
host_notification_options d,u,r,f
service_notification_commands notify-service-by-email
host_notification_commands notify-host-by-email
}
define contactgroup{
contactgroup_name admins
alias Nagios Administrators
members nagiosadmin
}
And I have my host and service definitions setup like this:
define host{
use linux-server ; Name of host template to use
; This host definition will inherit all variables that are defined
; in (or inherited by) the linux-server host template definition.
host_name web1
alias web1
address 10.10.10.6
contact_groups admins
}
define service{
use local-service ; Name of service template to use
host_name web1
service_description HTTP
contact_groups admins
check_command check_http
notifications_enabled 1
}
I've tested if this works by shutting down http on a web server it's monitoring. Waited a while and no message received on the mail server.
I've also telnetted to the mail server on the nagios machine. And I'm able to send an email to the account I want via telnet.
I'd appreciate some help here!

Answer 1

Look inside your service notification command configuration and execute it in a terminal for debugging.
Example :
define command {
command_name notify-service-by-email
command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$\n $NOTIFICATIONCOMMENT$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$
}