I have a SBS2008 behind a CradlePoint dual WAN failover. The CradlePoint has a cable ISP as well as a cellular ISP hooked up and working in failover so that when cable goes down, it jumps over to cellular and back when the cable comes back up.
SBS2008 currently receives email through static IP address configured at cable ISP. When CradlePoint is in failover, client can send email, but not receive.
Is there a way to have email come into the server regardless of what ISP it's connected through? Client is already jumping to tell cellular ISP to provision static IP - but how do I use it?