A couple of days ago I sent some note to MAILBOOK list (to which I subscribe). It was generally processed o.k., but one LISTSERV bounced back my mail, with the appended notice. Any ideas why ? /Zvika That's the bounced back message: Received: from vm.utcs.utoronto.ca by TECHNION.TECHNION.AC.IL (Mailer X1.25) with BSMTP id 1845; Tue, 10 Jan 89 22:46:35 IST Received: by UTORONTO (Mailer X1.25) id 6504; Tue, 10 Jan 89 15:44:46 EST Date: Tue, 10 Jan 1989 15:44 EST From: Revised List Processor (1.5o) <LISTSERV@UTORONTO> Subject: Message To: AER7101@TECHNION You are not authorized to mail to list MAILBOOK.