I was able to set up my corporate exchange to email to my iPod touch without setting up the VPN settings – sweet!
Since webmail access is enabled on our accounts, I can browse https://webmail. teleperformanceusa.com through Safari. But that’s slow, long, and inefficient. Now I can receive it directly through my Mail App –
First, I had to remove my existing Exchange connection – Google 
Next, adding up corporate exchange, and entering my Teleperformance credentials.
Email – your work email address
Server – webmail.teleperformanceusa.com
Domain – Teleperformance
Username – your email username
Password – your email password
Description – anything you’d like
Then after a few minutes…
It’s prompting me to set up an exchange password, which became my new device unlock code –
Now I get realtime (< 1 minute) emails pushed to my Mail App – so long as there’s WiFi that is.
Next stop, enabling multiple exchange accounts + removing Exchange password prompt requirements – that’s for another day.
How bout for Outlook 2010?