From owner-freebsd-questions  Thu Aug 22 14:56:32 2002
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id CF03037B400
	for <freebsd-questions@FreeBSD.ORG>; Thu, 22 Aug 2002 14:56:29 -0700 (PDT)
Received: from services.webwarrior.net (overlord-host99.dsl.visi.com [209.98.86.99])
	by mx1.FreeBSD.org (Postfix) with ESMTP id CB32A43E42
	for <freebsd-questions@FreeBSD.ORG>; Thu, 22 Aug 2002 14:56:28 -0700 (PDT)
	(envelope-from friar_josh@webwarrior.net)
Received: from markx.vladsempire.net (12-218-27-215.client.mchsi.com [12.218.27.215])
	by services.webwarrior.net (Postfix) with ESMTP
	id A465E25227; Thu, 22 Aug 2002 16:56:40 +0000 (GMT)
Subject: Re: Postfix question....
From: Josh Paetzel <friar_josh@webwarrior.net>
Reply-To: friar_josh@webwarrior.net
To: Matt Snow <drama@slakin.net>
Cc: freebsd-questions@FreeBSD.ORG
In-Reply-To: <20020822132330.J27882-100000@seven.slakin.net>
References: <20020822132330.J27882-100000@seven.slakin.net>
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
X-Mailer: Ximian Evolution 1.0.5 
Date: 22 Aug 2002 16:54:56 +0000
Message-Id: <1030035303.268.28.camel@markx.vladsempire.net>
Mime-Version: 1.0
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-questions.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-questions>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-questions>
X-Loop: FreeBSD.ORG

On Thu, 2002-08-22 at 20:27, Matt Snow wrote:
> Hello all,
> I randomly get emails that show as coming from my mail servers hostname
> and get something like this in the maillog:
> 
> Aug 22 12:08:14 seven postfix/smtpd[26527]: connect from
> seven.slakin.net[67.112.126.134]
> Aug 22 12:08:14 seven postfix/smtp[26525]: warning: host
> seven.slakin.net[67.112.126.134] greeted me with my own hostname
> seven.slakin.net
> Aug 22 12:08:14 seven postfix/smtp[26525]: warning: host
> seven.slakin.net[67.112.126.134] replied to HELO/EHLO with my own hostname
> seven.slakin.
> net
> Aug 22 12:08:14 seven postfix/local[26526]: 89EF7848: to=<no-@slakin.net>,
> relay=local, delay=90430, status=deferred (SOFT BOUNCE - unknown user:
>  "no-")
> Aug 22 12:08:14 seven postfix/smtp[26525]: 4D7F18C3:
> to=<dr4ma@quak.slakin.net>, relay=seven.slakin.net[67.112.126.134],
> delay=75418, status=defe
> rred (SOFT BOUNCE - mail for quak.slakin.net loops back to myself)
> Aug 22 12:08:14 seven postfix/smtpd[26527]: lost connection after EHLO
> from seven.slakin.net[67.112.126.134]
> Aug 22 12:08:14 seven postfix/smtpd[26527]: disconnect from
> seven.slakin.net[67.112.126.134]
> 
> How can I stop this from happening?
> 
> * * * * * * * *
> Matt Snow

adding the following lines to /usr/local/etc/postfix/main.cf should do
the trick:

smtpd_helo_required = yes
smptd_client_restrictions = Reject_unknown_hostname

Josh



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message