Distributed Monitorization Configuration

Hey Guys,

I am starting a distributed monitorization and i’m having some problems with the stale services, let me explain in a few lines my configurations:

1 remote host ( HOST2) making regular checks at each 10 minutes, and freshness checks enabled with threshold of 15 minutes and sending all results via nsca to central host

In central host ( HOST1 ) i have those alarms configured and with freshness activated with threshold of 21 minutes, and even this way i get service stale from HOST2 in HOST1 logs.

Anyone have an idea how to get rid of those service stales ?