From owner-freebsd-questions Tue Mar 5 20:51:21 2002 Delivered-To: freebsd-questions@freebsd.org Received: from russian-caravan.cloud9.net (russian-caravan.cloud9.net [168.100.1.4]) by hub.freebsd.org (Postfix) with ESMTP id 93A3537B402 for ; Tue, 5 Mar 2002 20:51:14 -0800 (PST) Received: from earl-grey.cloud9.net (earl-grey.cloud9.net [168.100.1.1]) by russian-caravan.cloud9.net (Postfix) with ESMTP id A805528B10; Tue, 5 Mar 2002 23:51:13 -0500 (EST) Date: Tue, 5 Mar 2002 23:51:13 -0500 (EST) From: Peter Leftwich X-X-Sender: To: Raja Velu Cc: Mike Bertsch , Subject: Re: Sendmail - MX record resolution error In-Reply-To: Message-ID: <20020305234933.T56511-100000@earl-grey.cloud9.net> Organization: Video2Video Services - http://Www.Video2Video.Com MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > 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: > Received: from mail3.registeredsite.com (mail3.registeredsite.com > [64.224.9.12]) > by russian-caravan.cloud9.net (Postfix) with ESMTP id DB4EA28BDE > for ; 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 ; 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 ; 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 > X-X-Sender: > To: Raja Velu > Cc: > Subject: Re: Sendmail - MX record resolution error > In-Reply-To: <002a01c1c483$b3e87380$1b00a8c0@win98> > Message-ID: > MIME-Version: 1.0 > Content-Type: TEXT/PLAIN; charset=US-ASCII > Sender: owner-freebsd-questions@FreeBSD.ORG > List-ID: > List-Archive: (Web Archive) > List-Help: (List Instructions) > List-Subscribe: > > List-Unsubscribe: > > X-Loop: FreeBSD.ORG > Precedence: bulk > > Howdy, To check if there's an MX record for a domain, try: > nslookup -q=MX > Not all companies use mail. as their mail server--some use smtp. or other random names, so as you surmised, pinging mail. 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 ... 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. 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. 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