sendmail/smtp problem

[Peter Vanderbilt]

What is causing the following message to be sent to root?  (We recently
connected to the Internet but do not send that way).  We get many of these
per day from different hosts.


    From MAILER-DAEMON  Thu Feb 13 11:48:24 1986
    Received: from ernie.berkeley.edu by usc-cse.usc.edu via TCP \
	(4.12/S1.9b) id AB14538; Thu, 13 Feb 86 11:48:24 pst
    Date: Thu, 13 Feb 86 11:48:16 pst
    From: MAILER-DAEMON (Mail Delivery Subsystem)
    Subject: Returned mail: Unable to deliver mail
    Message-Id: <8602131948.AB14538 at usc-cse.usc.edu>
    To: root
    Status: R
    
       ----- Transcript of session follows -----
    451 buildaddr: error: no user: No such device
    554 buildaddr: error: no user
    
      ----- No message was collected -----
    
    
("\" added by me).

Thanks.
-- 
Peter Vanderbilt
  uucp:  ...!{{decvax,ucbvax}!sdcsvax,hplabs,allegra,trwrb}!sdcrdcf!uscvax!pv
  csnet: pv at usc-cse
  arpa:  pv at usc-cse.csnet (or pv%usc-cse at csnet-relay.arpa)