I have setup wan failover on a Sonicwall NSA 240 with a cable (X1) and dsl (X2) connection, both with static IPs. We host our Exchange as part of a SBS 2011 Standard install and I was wondering how mail flow will continue in the event our cable (X1) connection goes down and failover kicks over to the dsl (X2) connection and how to properly set that up.
Thanks in advance!