From owner-freebsd-questions Tue Apr 11 22:50:54 1995 Return-Path: questions-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id WAA28419 for questions-outgoing; Tue, 11 Apr 1995 22:50:54 -0700 Received: from sunpost.sable.krasnoyarsk.su (sunpost.sable.krasnoyarsk.su [193.125.44.81]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id WAA28403 for ; Tue, 11 Apr 1995 22:50:06 -0700 Received: from news.sable.krasnoyarsk.su by sunpost.sable.krasnoyarsk.su with SMTP id AA23363 (5.65.kiae-1 ); Wed, 12 Apr 1995 13:46:43 +0800 Received: (from spf@localhost) by news.sable.krasnoyarsk.su (8.6.12/8.6.9) id NAA18492; Wed, 12 Apr 1995 13:44:22 +0800 To: Bill Fenner Cc: freebsd-questions@freefall.cdrom.com References: <95Apr11.103013pdt.49864@crevenia.parc.xerox.com> In-Reply-To: <95Apr11.103013pdt.49864@crevenia.parc.xerox.com>; from Bill Fenner at Tue, 11 Apr 1995 10:29:58 PDT Message-Id: Organization: Krasnoyarsk Interurban Telephone & Telegraph Station From: "Paul F. Safonov" Date: Wed, 12 Apr 1995 13:44:22 +0800 X-Mailer: Mail/@ [v2.31 FreeBSD] Subject: Re: SENDMAIL problem Lines: 30 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Length: 1137 Sender: questions-owner@FreeBSD.org Precedence: bulk In message <95Apr11.103013pdt.49864@crevenia.parc.xerox.com> Bill Fenner writes: >In message you write: >>There is a problem while processing "Return-Receipt-To". >>The receipt is sent from a zero user (see below). >>Should it be so? >Yes. MAIL FROM: <> makes it so that the receiving mailer doesn't bother >trying to bounce the message. It is part of RFC821. > ... Of course, server-SMTPs should not send notification > messages about problems with notification messages. One way to > prevent loops in error reporting is to specify a null reverse-path > in the MAIL command of a notification message. When such a > message is relayed it is permissible to leave the reverse-path > null. A MAIL command with a null reverse-path appears as follows: > MAIL FROM:<> Well. Null reverse-path is set in my computer, when messages (including Return-Receipt-To) are sent from MAILER-DAEMON. Why is then null reverse-path set and what is the way to prevent this? > Bill -- Safonov Paul E-mail: spf@sable.krasnoyarsk.su Phone: +7 (3912) 276-793