There shouldn't be any limitation with the mail folders that are sync'd with
Exchange. What's the error message you get when you send offline?
I have not yet figured out how to sync other folder. Not that
important to me at this time to spend time to figure this out.
On the second item, it is my error. In outlook whether you are online
or offline, you alway do the same thing to send a mail, you press the
"send" buttton. If it is offline, it goes to outbox and stays there
until connected. But in Entourage if you are working offline, then I
have to press "send later" button, this will put the mail in outbox.
If I am online, then I press "send now" button to send it right away.
When I am offline, and press "send later" then I do not get any error
message. if i by force of habit I press, "send now" button, then it
comes with the error message "server not found".