[otrs] Latching onto Exchange

I'm new to the OTRS list, but google-fu failed me so please forgive me if I missed this in my searching. I've got OTRS setup on a Ubuntu 8.10 server I'd like it to be able to pull e-mails from our Exchange server, however the admins who take care of the Exchange box can't/won't enable either IMAP or POP3. It does have the web interface enabled though. Is there anyway I can use the OWA access to get the mail similar to the way Evolution works with Exchange to pull the mail into OTRS? Bryan