I get the following regularly.  What's up?
 
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>Received: from TAMVM1(MAILER) by RPICICGE (Mailer X1.25) id 0196;
>          Wed, 25 May 88 20:20:18 EDT
>Received: by TAMVM1 (Mailer X1.24) id 3148; Wed, 25 May 88 18:53:56 CDT
>Date:         Wed, 25 May 1988 18:53 CDT
>From:         Revised List Processor (1.5n) <LISTSERV@TAMVM1>
>Subject:      Output of job "DIST-HAM" from LISTSERV@UIUCVMD
>To:           "'John S. Fisher'" <FISHER@RPICICGE>
>
>>>> To: WALKER@UTSW
>This node could not be found in the routing tables.
>Recipient has been ignored.