'At the end of message, rename the file holding the message to its final
name concatenated with the size of the file.
@rtype: L{Deferred <defer.Deferred>} which successfully results in
L{bytes}
@return: A deferred which returns the name of the file holding the
message.'

def eomReceived(self):

    self.finalName = (self.finalName + (',S=%d' % self.size))
    return mail.FileMessage.eomReceived(self)
