Date: Tue, 5 Mar 2002 23:51:13 -0500 (EST) From: Peter Leftwich <Hostmaster@Video2Video.Com> To: Raja Velu <raja@micronetusa.com> Cc: Mike Bertsch <questions@radioactivedata.org>, <freebsd-questions@FreeBSD.ORG> Subject: Re: Sendmail - MX record resolution error Message-ID: <20020305234933.T56511-100000@earl-grey.cloud9.net> In-Reply-To: <Pine.BSF.4.33.0203051521360.94691-100000@glow>
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> host company1.com company1.com has address 211.62.59.58 company1.com mail is handled (pri=10) by mail.1radio.com Also check out "man dig" and "man nslookup." -- Peter Leftwich President & Founder Video2Video Services Box 13692, La Jolla, CA, 92039 USA +1-413-403-9555 On Tue, 5 Mar 2002, Mike Bertsch wrote: > Return-Path: <owner-freebsd-questions@FreeBSD.ORG> > Received: from mail3.registeredsite.com (mail3.registeredsite.com > [64.224.9.12]) > by russian-caravan.cloud9.net (Postfix) with ESMTP id DB4EA28BDE > for <pete@cloud9.net>; Tue, 5 Mar 2002 15:36:08 -0500 (EST) > Received: from mail.video2video.com (mail.video2video.com [209.35.10.22]) > by mail3.registeredsite.com (8.11.6/8.11.4) with ESMTP id > g25Jevx13482 > for <pete@cloud9.net>; Tue, 5 Mar 2002 14:40:57 -0500 > Received: from mx2.freebsd.org [209.35.10.22] by mail.video2video.com > (SMTPD32-6.06) id AC3728430146; Tue, 05 Mar 2002 15:36:07 -0500 > Received: from hub.freebsd.org (hub.FreeBSD.org [216.136.204.18]) > by mx2.freebsd.org (Postfix) with ESMTP > id 0987F56081; Tue, 5 Mar 2002 12:34:04 -0800 (PST) > (envelope-from owner-freebsd-questions@FreeBSD.ORG) > Received: by hub.freebsd.org (Postfix, from userid 538) > id 4527A37B400; Tue, 5 Mar 2002 12:34:01 -0800 (PST) > Received: from localhost (localhost [127.0.0.1]) > by hub.freebsd.org (Postfix) with SMTP > id 1C7472E800C; Tue, 5 Mar 2002 12:34:01 -0800 (PST) > Received: by hub.freebsd.org (bulk_mailer v1.12); Tue, > 5 Mar 2002 12:34:00 -0800 > Delivered-To: freebsd-questions@freebsd.org > Received: from glow.radioactivedata.org (glow.radioactivedata.org > [199.232.41.27]) > by hub.freebsd.org (Postfix) with SMTP id 21C6B37B402 > for <freebsd-questions@freebsd.org>; Tue, 5 Mar 2002 12:33:58 -0800 (PST) > Received: (qmail 18267 invoked by uid 7770); 5 Mar 2002 20:26:24 -0000 > Received: from localhost.radioactivedata.org (HELO localhost) (127.0.0.1) > by localhost.radioactivedata.org with SMTP; 5 Mar 2002 20:26:24 -0000 > Date: Tue, 5 Mar 2002 15:26:24 -0500 (EST) > From: Mike Bertsch <questions@radioactivedata.org> > X-X-Sender: <questions@glow> > To: Raja Velu <raja@micronetusa.com> > Cc: <freebsd-questions@FreeBSD.ORG> > Subject: Re: Sendmail - MX record resolution error > In-Reply-To: <002a01c1c483$b3e87380$1b00a8c0@win98> > Message-ID: <Pine.BSF.4.33.0203051521360.94691-100000@glow> > MIME-Version: 1.0 > Content-Type: TEXT/PLAIN; charset=US-ASCII > Sender: owner-freebsd-questions@FreeBSD.ORG > 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 > Precedence: bulk > > Howdy, To check if there's an MX record for a domain, try: > nslookup -q=MX <domainname> > Not all companies use mail.<domain> as their mail server--some use smtp.<domain> or other random names, so as you surmised, pinging mail.<domain> won't always work. Even if the server does exist, the company may not have an MX record pointing to it. > HTH, > -Mike > > On Tue, 5 Mar 2002, Raja Velu wrote: > > Hi, What does this error mean? > > reject=450 4.7.1 <user1@company1.com>... Can not check MX records for recipient host company1.com > > Does it mean that the domain "company1.com" does not have a mail server associated with it? > > > > If so, how do I check if there exists an MX record for a particular domain. > > I used to ping to mail.<domainname> and see if it resolves. That apparently > > is not the right approach as the emails sent to a user today, generated the > > above error even though I'm able to ping mail.<domainname> for his email > > address. > > > > Thanks for your time. > > > > Rgds, > > > > Raja Velu > > Senior Software Engineer > > MicroNet USA, Inc. > > 847 593 3639 x 112 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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