We have a company with multiple sites running exchange 2003. There are two email servers. The main server at the corperate office, and a back up server at a smaller remote site. We are trying to find a solution to implement that would involve email redundancy and fail over. If the main email server goes down, have all new mail forwarded to the back up server and distributed. Also when the main email server is down, the clients are able to get their contacts and calendars. I know it's alot to digest, but would appreciate any suggestions. Thanks!