I have two users who in addition to their own personal mailbox have a shared mailbox. If they view the From field they can choose to send as the shared mailbox address instead of their default personal address. I want to change this so that the default send addres is the shared mailbox smtp and not their personal address. It seems a fairly reasonable thing to do, as I want 90% of the work to be contained in this mailbox.
Can this be done?