Your company has an Exchange 2010 organization that contains multiple Hub Transport servers. You
have a line of business application that retry e-mail messages by using a Hub Transport server
named Hub1. The application only supports sending e-mail to a single SMTP server. You need to
ensure that the application can retry e-mail messages of Hub1 fails. What should you do?
A.
Implement log transactions
B.
Install and configure failover clustering on the Hub Transport servers.
C.
Implement Windows network load balancing on the Hub Transport servers.
D.
Create multiple MX records for the Hub Transport servers in the internal DNS zone.