set interval 30s alarm people email to test1@localhost to test2@localhost smtp localhost from alrm@localhost monitor group webservers host www1.example.com address 10.11.135.101 check ping host www2.example.com address 10.11.135.102 # comments can occur at the beginning check ping # or the end of a line check ping # checks are not named, so multiple is okay monitor host gateway address 10.79.37.220 check ping count 10 interval 100ms # Hosts without any checks will always be successful monitor host database address 10.11.135.103