Hi, I'm using Nagios in a production environment, and I'm trying to configure some complex setup, which I'll try to explain here : - Munin is sending to Nagios NSCA exports to tell when a server run out of disk space. We have in services.cfg this configuration : define service{ use crit-service # this is a service which will send us SMS notifications host_name serverOne, serverTwo hostgroup_name groupofServers1, groupofServers2 service_description df max_check_attempts 1 check_command check_none active_checks_enabled 0 } This is a typical passive checks driven service. we also want to send notification first to somebody, and 10 minutes later to the whole admin team : here is the escalation.cfg for the "df" service and (for one of the servers, this is repeated for each server or group of server): define serviceescalation{ service_description df host_name someserver first_notification 1 last_notification 0 notification_interval 10 contact_groups some_guy } define serviceescalation{ service_description df host_name someserver first_notification 2 last_notification 0 notification_interval 10 contact_groups whole_admin_team } This is working just fine. Now the tricky part : we would like to send notification for DF WARNINGS only during workhours, and the rest (u,c,r) in the 24x7 period . I tried to create more escalations, specific with "timeperiod" and "escalation_options" but I can't make it. Will you find the solution ? thanks in advance for your help. Julien Dehee.