my problem :

we want to get notification mail only for critical, warning and unknown state.

so i used c,w,u in the right options.

result : when a service go Critical I get an email, when it goes OK no email (that what we want) but if the service go critical again , no email.

another clue ? notification_interval 0

Do you have any idea here ?

on shinken 2 ; debian 7
just say if you want more informations or conf file