SHEP@XX.LCS.MIT.EDU.UUCP (02/06/87)
I believe USC-ISIB used to be listed as a top-level domain server. If some hosts still contain USC-ISIB and 10.3.0.52 in their nameserver configurations, that might explain the continued attempts to communicate with the "non-existent host". (I did find one host behind MITGW for which this is true.) -------