ZCS as exchange 2007 OWA proxy
I operate out of a remote office without VPN connectivity. Today my company runs an Exchange 2007 server with OWA enabled. I would like to use Zimbra Desktop, T-bird with Lightning or Evolution on my Ubuntu 9.10 desktop to access and synchronize my Calendar and email. Can I run ZCS as a local server on my desktop as a proxy between Exchange 2007 OWA and one of these clients or the Zimbra desktop client?
Imap directly from the client to the server is not workable as I also access through a linux laptop and an android Exchange client on my handset and the synchronization doesn't work well.
Thanks for any advice you can offer.