NotifyLink requires the /exchange virtual directory be configured in Exchange in order to sync contact, calendar, and task information.  When using Exchange 2007, this directory can be set up the same as the /owa virtual directory and simply be re-directed to /owa after logging in.

NotifyLink cannot use the /owa virtual directory to login to synchronize contact, calendar, and task information because NotifyLink uses WebDAV which is not supported on /owa directory.