- You would need to create a connector per server, or create one connector and point it to a DNS name that would resolve for both hosts.
- There is no way that I am aware of for the LEM to send to one host in some cases and then the other in another instance. For example, if you have two active response connectors set up it will send to both of them.
- See #2, but if you set up two connectors it will send to both. However, you will get an InternalInfo Event with the EventInfo of Email Notification Failed and it should include information on if the server was unreachable:
Configure the Email Active Response Connector - SolarWinds Worldwide, LLC. Help and Support
My main suggestion is going with the suggestion in number 1 or otherwise setting your servers up in a failover so that the LEM is not communicating with the cluster member directly, but instead with the cluster in some fashion (Virtual IP, Virtual Hostname) where the failover cluster solution will detect and make the switch if necessary.