From owner-freebsd-questions Wed Nov 8 8:54: 5 2000 Delivered-To: freebsd-questions@freebsd.org Received: from mgw1.MEIway.com (mgw1.meiway.com [212.73.210.75]) by hub.freebsd.org (Postfix) with ESMTP id A3B1F37B479 for ; Wed, 8 Nov 2000 08:53:59 -0800 (PST) Received: from mail.Go2France.com (ms1.meiway.com [212.73.210.73]) by mgw1.MEIway.com (Postfix Relay Hub) with ESMTP id E08656A904 for ; Wed, 8 Nov 2000 17:53:58 +0100 (CET) Received: from sv.Go2France.com [212.73.210.79] by mail.Go2France.com with ESMTP (SMTPD32-6.04) id A692BDC01C4; Wed, 08 Nov 2000 18:00:02 +0100 Message-Id: <5.0.0.25.0.20001108175249.025b6eb0@mail.Go2France.com> X-Sender: lconrad%Go2France.com@mail.Go2France.com X-Mailer: QUALCOMM Windows Eudora Version 5.0 Date: Wed, 08 Nov 2000 17:53:57 +0100 To: freebsd-questions@freebsd.org From: Len Conrad Subject: Re: MX-DNS-telnet sanity check In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG At 11:48 08/11/00 -0500, you wrote: >Hi all, more generic than FreeBSD, but hope somecan confirm/deny: > >We have a domain hosted on us, with an MX record pointing to another >ISP. Mail worked just fine until this Monday morning. At that time, mail >delivery through the MX'ed ISP went intermittent. By that, some mail is >delivered OK, some mail is not. > >"Other ISP" are claiming that our DNS is set up incorrectly. >domain.com. IN MX 0 mail.otherisp.net. >--seems pretty straightforward to us, and has worked for over a year. > >The basis of their claim is their statement that running: > >bash# telnet domain.com 25 > >-- does not connect to their mail server, the target of the MX entry, but >rather to the server where domain.com is housed. This is supposed to be >proof that our DNS MX entry is wrong. false proof >Personally, I didn't know that specifying port 25 on a telnet connection >would cause telnet to do an MX lookup if won't, of course. >and then connect to that address >rather than the address for "domain.com". Am I missing this or are they >blowing the smoke I think they are? the latter. telnet mailhost 25 ... is the way to test it. Len To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message