Nagios Support Forum

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[nagios@xyz objects]$ which mail
/bin/mail

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# 'notify-host-by-email' command definition
define command{
        command_name    notify-host-by-email
        command_line    /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$
        }

# 'notify-service-by-email' command definition
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" |/bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$
        }

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define contact{
        contact_name                    nagiosadmin
        use                             generic-contact
        alias                           Nagios Admin
        email                           [email protected]
}

define contactgroup{
        contactgroup_name       admins
        alias                   Nagios Administrators
        members                 nagiosadmin
        }

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define contact{
        name                            generic-contact         ; The name of this contact template
        service_notification_period     24x7                    ; service notifications can be sent anytime
        host_notification_period        24x7                    ; host notifications can be sent anytime
        service_notification_options    w,u,c,r,f,s             ; send notifications for all service states, flapping events, and scheduled downtime events
        host_notification_options       d,u,r,f,s               ; send notifications for all host states, flapping events, and scheduled downtime events
        service_notification_commands   notify-service-by-email ; send service notifications via email
        host_notification_commands      notify-host-by-email    ; send host notifications via email
        register                        0                       ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL CONTACT, JUST A TEMPLATE!
        }

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tail -50 /var/log/maillog

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 echo "test" | mail -s "test mail" [email protected]

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May 21 11:01:46 postfix/error[5015]: 6D3F2100335: to=<[email protected]>, relay=none, delay=147550, delays=147520/30/0/0.03, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to xyz.com[37.202.5.178]:25: Connection timed out)
May 21 11:01:46 EIS02 postfix/error[5018]: 869081002C1: to=<[email protected]>, relay=none, delay=235723, delays=235693/30/0/0.06, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to xyz.com[37.202.5.178]:25: Connection timed out)
May 21 11:01:46 EIS02 postfix/error[5019]: 7CA75100195: to=<[email protected]>, relay=none, delay=416315, delays=416285/30/0/0.06, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to xyz.com.com[37.202.5.178]:25: Connection timed out)

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connect to xyz.com[37.202.5.178]:25: Connection timed out