This message was created automatically by mail delivery software. A message that you sent has not yet been delivered to one or more of its recipients after more than 24 hours on the queue on dp50.ecc.u-tokyo.ac.jp. The message identifier is: 120yfs-0003Fc-00 The date of the message is: Thu, 23 Dec 1999 12:12:22 +0900 The address to which the message has not yet been delivered is: penny(a)so-net.ne.jp No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you.