<blush> I have a would-be subscriber sending from a site that adds a "Sender: postmaster@......" header to every message in addition to the user's "From:" My initial " don't do that !!!" resulted in a quote from RFC822 ( sec 4.4 -> 4.4.4 ) ( definitions of FROM/SENDER ) The original reject from LISTSERV follows - How SHOULD I advise this user ??? - mike ----------------------------Original message---------------------------- >The enclosed message, found in the LISTSERV mailbox and shown under the spool >ID 4327 in the system log, has been identified as a possible delivery error >notice for the following reason: mail origin seems to be a mailer. >Return-Path: <@CNSIBM.ALBANY.EDU:[log in to unmask]> >Received: from ALBNYVM1 (NJE origin SMTP@ALBNYVM1) by CNSIBM.ALBANY.EDU (LMail > V1.2a/1.8a) with BSMTP id 4226; Mon, 7 Aug 1995 07:16:57 -0400 >Received: from mn3.swip.net by UACSC2.ALBANY.EDU (IBM VM SMTP V2R2) with TCP; > Mon, 07 Aug 95 07:16:56 EDT >Received: by mn3.swip.net with UUCP (8.6.8/2.01) > id NAA18663; Mon, 7 Aug 1995 13:15:50 +0200 >From: <[log in to unmask]> >Received: by relay.brottsforebygganderadet.se (UUPC/extended 1.12j); > Mon, 07 Aug 1995 12:42:31 -0400 >Message-ID: <[log in to unmask]> >To: [log in to unmask] >Subject: UNCJIN-L >MIME-Version: 1.0 >Content-Type: text/plain; charset=Iso-8859-1; name=body.txt >Content-Transfer-Encoding: 7bit >Sender: ADVOX Gateway <[log in to unmask]> >Date: Mon, 07 Aug 1995 12:42:31 -0400 > >Subscribe UNCJIN-L > >[log in to unmask] >----------End of Original Message----------