Our alarm 'Host connection and power state' is getting triggered at least once a week due to networking issues. The alarm action is to send an email for all state changes (green-yellow, yellow-red, red->yellow, yellow-green). The strange thing is we only get an email alert for when it turns red. The object turns back to green and the logs say that the alarm has gone back to green, but the alarm never sends us the email
e.g.
Alarm 'Host connection and power state' on xxxx changed from Green to Red 13/04/2014 7:08:58 p.m.
Alarm 'Host connection and power state' on xxxx triggered an action 13/04/2014 7:08:58 p.m.
Alarm 'Host connection and power state' on xxxx sent email to (our email address) 13/04/2014 7:09:30 p.m.
Established a connection 13/04/2014 7:13:55 p.m. xxxx
Alarm 'Host connection and power state' on xxxx changed from Red to Green 13/04/2014 7:13:55 p.m.
Get-AlarmDefinition "Host connection and power state" | Get-AlarmAction | select ActionType,Trigger | fl
ActionType : SendEmail
Trigger : {Yellow -> Red (Once), Yellow -> Green (Once), Red -> Yellow (Once)}
We are running vCenter 5.1 941893