I can confirm this on Edgy and Exchange 2003+Active Directory. I've tried inserting https://owa.server.ext/exchange/username as the OWA URL and name.surname as username, without luck. Still same error.
-- evolution-exchange: unable to setup exchange account https://launchpad.net/bugs/25106 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs