Setting up a redundancy connection

Hi,

I am looking for some advise

we currently have a OWA / Activesync connection using an ip address 1.1.1.1 which is also one of our VPN connections.

we have a second VPN connection 2.2.2.2,

I was looking into getting a redundancy route for emails. what happened was 1.1.1.1 line went down, which stopped OWA, mobile emails and the VPN connect from working.

The 2.2.2.2 link was working fine for VPN.

So what I want to do is to setup so that if 1.1.1.1 fails, then we can use the 2.2.2.2 link for OWA, mobile emails etc.

Hopefully set it up without having to change the settings on the devices or owa weblink (e.g https:\\ 1.1.1.1 \owa). have a re-direct so that 1.1.1.1 can automatically be re-directed to 2.2.2.2.

Is this possible to setup?

Thanks for your help