From owner-freebsd-hackers@FreeBSD.ORG  Sun Aug 27 17:17:21 2006
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
X-Original-To: hackers@freebsd.org
Delivered-To: freebsd-hackers@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 4269A16A4DE
	for <hackers@freebsd.org>; Sun, 27 Aug 2006 17:17:21 +0000 (UTC)
	(envelope-from gshapiro@gshapiro.net)
Received: from gir.gshapiro.net (gir.gshapiro.net [209.246.26.16])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 1C1D343FD8
	for <hackers@freebsd.org>; Sun, 27 Aug 2006 17:08:51 +0000 (GMT)
	(envelope-from gshapiro@gshapiro.net)
Received: from gir.gshapiro.net (localhost [127.0.0.1])
	by gir.gshapiro.net (8.13.5/8.13.6) with ESMTP id k7RH8ifo039081
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO);
	Sun, 27 Aug 2006 10:08:45 -0700 (PDT)
	(envelope-from gshapiro@gir.gshapiro.net)
X-DKIM: Sendmail DKIM Filter v0.5.1 gir.gshapiro.net k7RH8ifo039081
Received: (from gshapiro@localhost)
	by gir.gshapiro.net (8.13.5/8.13.6/Submit) id k7RH8iw3039080;
	Sun, 27 Aug 2006 10:08:44 -0700 (PDT) (envelope-from gshapiro)
Date: Sun, 27 Aug 2006 10:08:44 -0700
From: Gregory Shapiro <gshapiro@freebsd.org>
To: Dirk Engling <erdgeist@erdgeist.org>
Message-ID: <20060827170844.GB1032@gir.gshapiro.net>
References: <44F0E38F.5030809@erdgeist.org>
	<17648.59470.572563.377998@bhuda.mired.org>
	<20060827052733.F16322@erdgeist.org>
	<17649.9146.307818.780974@bhuda.mired.org>
	<44F1B7B7.9090701@erdgeist.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <44F1B7B7.9090701@erdgeist.org>
User-Agent: Mutt/1.5.12-2006-07-14
Cc: hackers@freebsd.org
Subject: Re: jails, cron and sendmail
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 27 Aug 2006 17:17:21 -0000

> But it prevents a vanilla system to try to connect to localhost:25 once
> a day. Only those periodic scripts send mails per default.

If you still want mail to work, but don't want to listen on a network
port:

cd /etc/mail/
make
vi `hostname`.submit.mc
    Change the 127.0.0.1 in the line "FEATURE(`msp', `[127.0.0.1]')dnl"
    to an IP address that has a listening SMTP server and will accept
    mail from your jail.  You can also use a hostname, for example,
    FEATURE(`msp', `smtp.example.com')
make install

Then make sure you leave the default for sendmail_outbound_enable ("YES")
and turn off the others.  You'll have a system where mail works just fine
and nothing listens on any TCP port.