From owner-freebsd-questions@FreeBSD.ORG  Tue Dec 23 09:02:17 2003
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
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 6855F16A4CE
	for <freebsd-questions@freebsd.org>;
	Tue, 23 Dec 2003 09:02:17 -0800 (PST)
Received: from out004.verizon.net (out004pub.verizon.net [206.46.170.142])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 2051543D2F
	for <freebsd-questions@freebsd.org>;
	Tue, 23 Dec 2003 09:02:16 -0800 (PST)	(envelope-from cswiger@mac.com)
Received: from mac.com ([68.161.96.170]) by out004.verizon.net
          (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP
          id <20031223170215.OXPF12902.out004.verizon.net@mac.com>;
          Tue, 23 Dec 2003 11:02:15 -0600
Message-ID: <3FE87501.7040607@mac.com>
Date: Tue, 23 Dec 2003 12:01:53 -0500
From: Chuck Swiger <cswiger@mac.com>
Organization: The Courts of Chaos
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
	rv:1.6b) Gecko/20031208
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: "Feroz F. Basir" <dbase77@yahoo.com>
References: <20031223160016.34726.qmail@web40609.mail.yahoo.com>
In-Reply-To: <20031223160016.34726.qmail@web40609.mail.yahoo.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Authentication-Info: Submitted using SMTP AUTH at out004.verizon.net from
	[68.161.96.170] at Tue, 23 Dec 2003 11:02:15 -0600
cc: freebsd questions <freebsd-questions@freebsd.org>
Subject: Re: fbsd4.9 sendmail
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 23 Dec 2003 17:02:17 -0000

Feroz F. Basir wrote:
> My mail server is within my LAN and we dont have/use
> DNS server. Why sendmail want to resolve domain.com?

Sendmail is trying to perform an MX lookup of domain.com, and then will fall 
back to using an A record (or the /etc/hosts file) if that fails.

> Do I need to setup DNS server under fbsd4.9 just to
> resolve odmain.com if I send to john@domain.com?

Nope.  But sendmail and lots of other network-aware programs (things like SSH) 
are happier when forward and reverse DNS is available.

-- 
-Chuck