For mail, I have an exchange email which connects to the network while I am on the office network. When I am at home (using my laptop) outlook knows that if it cannot connect automatically via the local network it goes via a proxy server. How can I get the mail app on my iPad to do this automatically. I have got it to work using two separate exchange accounts (one for when I am on site and one when I am off site) but ideally I would prefer simply the one exchange account. Is this possible?