Anita,
        I have seen all of these peculiar messages. All of the mailer
        daemons are people. Everyone that I have ever looked for has
        been a person. It is some sort of network of individuals,
        although it is supposed to be an automated system. I don't
        know whether you will get an answer because of their profiles.
        I have a feeling that mailer daemon is going to be some sort
        of news story one day at times. Good luck with your inquiry. --Paul.
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Dr. Paul S. di Virgilio,  University of Toronto  [log in to unmask]