-fname Sets the name of the ``from'' person (i.e., the sender of the
mail). -f can only be used by ``trusted'' users (normally
root, daemon, and network) or if the person you are trying to
become is the same as the person you are.
-t Read message for recipients. To:, Cc:, and Bcc: lines will
be scanned for recipient addresses. The Bcc: line will be
deleted before transmission.