erik:
maybe you can shed some light.
using windows 7 desktops in a win2008r2 domain. pc's are typically logged off, but not always
if I set up synctoy under the user account with the target on the server, the test works, but then the job fails when run as a scheduled task, if I remember, can't find the path, or something like that. the path I typically use as the target is "\\servername\users\username\documents\outlook backup"
if I use a mapped drive and they've logged out, it will fail, because it doesn't know what the mapped drive is.
I've set it up logged in as the administrator on the pc, and it seems to work, though sometimes it can't find the target path because I have redirected my documents to a folder called documents in their user directory.
in all instances, the test after initial setup works fine.

also, how do you get away without specifying the backup name? I always use - R "Outlook Backup" for the command line parameters.