Create multiple send connectors

Hi,

I have 2 exchange servers, EXmail1 and EXmail2 (Both CAS and MBOX-DAG)

EXmail1 uses ISP1 and EXmail2 uses ISP2 to connect to internet.

Both are having send connectors to send emails to internet directly. It means, If emails submitted by and user1 outlook goes to EXmail1 will sent by EXmail1 send connector and emails submitted by and user2 outlook goes to EXmail2 will sent by EXmail2 send connector.

Now the problem is that, when my ISP1 is down- my EXmail1 gets disconnected from the internet and emails submitted on this servers stays in queue and is undelieverd till ISP1 is up again. As internet starts working on EXmail1, the queued emails goes without any problem.

I want to achieve that if EXmail1 is disconnected from the internet, the queued emails should go to EXmail2 and get delievered to internet.

and

if EXmail2 is disconnected from the internet, the queued emails should go to EXmail1 and get delievered to internet.

I want to create multiple send connectors in a way that, if 1st CAS is disconnected from internet then 2nd CAS should send the queued emails to internet.

Any help on this ?

Thanks, Rishi Pandit.