From owner-freebsd-net@FreeBSD.ORG Tue Oct 12 12:52:05 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 25716106566B; Tue, 12 Oct 2010 12:52:05 +0000 (UTC) (envelope-from egrosbein@rdtc.ru) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [62.231.161.221]) by mx1.freebsd.org (Postfix) with ESMTP id 83F5C8FC18; Tue, 12 Oct 2010 12:52:04 +0000 (UTC) Received: from eg.sd.rdtc.ru (localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.14.4/8.14.4) with ESMTP id o9CCYTFn088870; Tue, 12 Oct 2010 19:34:29 +0700 (NOVST) (envelope-from egrosbein@rdtc.ru) Message-ID: <4CB455D5.1080902@rdtc.ru> Date: Tue, 12 Oct 2010 19:34:29 +0700 From: Eugene Grosbein User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; ru-RU; rv:1.9.1.10) Gecko/20100712 Thunderbird/3.0.5 MIME-Version: 1.0 To: Doug Barton References: <4CB2AF28.30309@rdtc.ru> <4CB3D6B6.9060001@rdtc.ru> <4CB409DA.1060705@FreeBSD.org> In-Reply-To: <4CB409DA.1060705@FreeBSD.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org Subject: Re: strange resolver behavour X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Oct 2010 12:52:05 -0000 On 12.10.2010 14:10, Doug Barton wrote: >> It's a pity if we have no diagnostic utility that behaves just like >> ordinary applications like MTA dealing with DNS... How am I supposed >> to debug suspected MTA behavior without such utility? > > Step 1, verify that your authoritative name servers have MX records in > the first place. As it turns out, they don't. That is not my domain and I really don't care about its MX records/lame delegations/etc. I care about my resolver behavior. > > The proper tool to use to diagnose DNS problems is dig. It's more > complex than the tools that are designed to just give you the answer, > but if everything were working right to start with you wouldn't need to > diagnose anything. See how that works? :) Hmm, I don't want to debug DNS problems - indeed, dig is nice tool. I need to debug system resolver that is different thing, as you know. Eugene Grosbein