<div dir="ltr">Hi there, I don't know if this solution would be the best solution to this problem, but I've patched config.c to correct a problem in verification of notification_interval versus check_interval, which when configuring "interval_length=1", the check of notification_interval versus check_interval issues wrong warning at nagios.log. Here is the patch: $ nagios/base> diff -Nur config.c my_config.c --- config.c 2008-09-11 19:53:08.000000000 +0000 +++ my_config.c 2008-09-11 19:53:42.000000000 +0000 @@ -1875,7 +1875,7 @@ } /* see if the notification interval is less than the check interval */ - if(temp_service->notification_interval<temp_service->check_interval && temp_service->notification_interval!=0){ + if(temp_service->notification_interval<temp_service->check_interval*(interval_length/60) && temp_service->notification_interval!=0){ logit(NSLOG_VERIFICATION_WARNING,TRUE,"Warning: Service '%s' on host '%s' has a notification interval less than its check interval! Notifications are only re-sent after checks are made, so the effective notification interval will be that of the check interval.",temp_service->description,temp_service->host_name); warnings++; } $ nagios/base> Please evaluate the workaround, I've successfully applied the patch and got rid of annoying warning messages at nagios.log HTH, Marcel </div>