Notification did not execute

[Net Warrior]

Hi there guys.

I have face something weird, I did not get a notificationn of a down
state for a particular host,
this is the host config.

define service{
        use                             local-service         ; Name
of service template to use
        host_name                       hostname
        service_description             SSH
        check_command                   check_ssh
        flap_detection_enabled          0
        notifications_enabled           1
        notification_options            w,u,r,c
        check_period                    24x7
        check_interval                  1
        max_check_attempts              3
        first_notification_delay        0
        notification_interval           10
}



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                       hostname
        alias                           the alias
        address                         x.x.x.x
        contact_groups                  admins
        contacts                        nagiosadmin
        check_interval                  1
        max_check_attempts              3
        notification_interval           10
        flap_detection_enabled          0
        first_notification_delay        0
        }

and in the logs I got
[1346196987.097821] [032.0] [pid=21145] ** Service Notification
Attempt ** Host: 'hostname', Service: 'SSH', Type: 0, Options: 0,
Current State: 2, Last Notification: Wed Dec 31 21:00:00 1969
[1346196987.097843] [032.1] [pid=21145] The host is either down or
unreachable, so we won't notify contacts about this service.
[1346196987.097851] [032.0] [pid=21145] Notification viability test
failed.  No notification will be sent out.

The host is either down or unreachable --- Of coure, so why the
notification was not fired?

Any idea what could be wrong?, I got some notification with other host
and all have the same configuration, I have already restarted nagios

Thanks for your time and support
Best regards.

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