Questions w/ fax

Our business is upgrading/downgrading from Winfax since no longer supported. MS Fax seems to be the next logical alternative but I have some questions. This applies to a SBS Server w/ clients using XP and Vista. First, It appears that all clients "share" the same fax account. Even though the user name appears different on the sender info, the inbox/outbox folders display all company faxes. I am confused as to why all the faxes sent/recieved in the entire company would show on each client? Some faxes are private and should not be available to every employee. Second, when a fax is sent it stays in the outbox until the program is closed and reopened, then it will show in the sent items. How do you refresh? Doesn't this happen automatically?Third, failed faxes stay in the outbox. Shouldn't they end up in the sent items box as a failed item? That is the way winfax works.