We have a 2 node DAG/CAS setup that uses loadbalancers for client access. We did a test shutdown of our primary site the other day and everything went well apart from the outbound SMTP.
What I did was setup 2 send connectors, connector A and connector B. These 2 send connectors both go to our smarthost at Messagelabs. Connector A has a cost of 1 and is assigned to server A. Connector B has a cost of 100 and is assigned to server B. My thinking was that should server A fail it will automatically failover to connector B. Unfortunately it seems that Exchange has no way of doing this. Obviously if I manually disable connector A it all starts working on connector B. So how do I achieve automatic failover on SMTP outbound? Surely people don't all do this manually?
Any help greatly appreciated!