'@type address: L{bytes}
@param address: The address of the message recipient.
@type fp: file-like object
@param fp: The file in which to store the message while it is being
received.
@type a: 2-L{tuple} of (0) L{bytes}, (1) L{bytes}
@param a: Positional arguments for L{FileMessage.__init__}.
@type kw: L{dict}
@param kw: Keyword arguments for L{FileMessage.__init__}.'

def __init__(self, address, fp, *a, **kw):

    header = ('Delivered-To:    %s\n' % address)
    fp.write(header)
    self.size = len(header)
    mail.FileMessage.__init__(self, fp, *a, **kw)
