From owner-freebsd-questions@freebsd.org Mon Mar 6 18:44:06 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 83FF0CFC440 for ; Mon, 6 Mar 2017 18:44:06 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from mail-wr0-x241.google.com (mail-wr0-x241.google.com [IPv6:2a00:1450:400c:c0c::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2248B1287 for ; Mon, 6 Mar 2017 18:44:05 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: by mail-wr0-x241.google.com with SMTP id u108so18895902wrb.2 for ; Mon, 06 Mar 2017 10:44:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=date:from:to:subject:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=dPTcw0uFUTBPsJyCaIRqUCv/Cc8klm0ziKspCZD5ews=; b=lMT895fnUTZrWR/WUyrwEt6w0CKMD/zQSDimSi8/AiOnGGQdYInaAZNK3xIDrgDc/8 OL5tszmN1JwZVAF2zsdkIIXxiRqu2bItd/a27WtdAvOxE++Xe5Pq50NI0oYONHcyhyxH ZZttiyENhw4f7muvOf2+UqYpg1pKhRhLHcizaFKbq1vbDbx/Qdq/Hv9jC/V6eHFjq0iS LE6HKtjy0d5ULMh+59DJLlQwL8NkijQRsXpxyuA8QEbYe8/qNpGeH/Lrmwaf2biWBGj7 c0Gm6GJ8P+vf4+XSMnFFXIVGaQZj4QBRjO5GUxb5lW2rAz0JblAQWG1Ke3cPtBRlcC4Y SwhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dPTcw0uFUTBPsJyCaIRqUCv/Cc8klm0ziKspCZD5ews=; b=hwpID5f/m3DcYldFAuWtby0XEV1XIP9rtI6w5hKh/u7+YNkSfEwNkIC7I1TPKFoUZ2 n1YL8CfVygUwNYUQFHx5d7EJ/F1HKL8NmWlLVQUxVJW+AVoLRvuyTIT+pnVoVINlv6CC mOXDvC5qRLK/KrvJyHN8Qw6rzhfju34v2V27MqXxnfqiaGSt+eDJjy/1GPvLR25C10zw FBMYifrZs3jaA8Vo8jigLQwZtiVk9HzSlp+RKN3JhfIuxSQPVGSyv27eoryk5XEVSvsu VJmXdg7aDqPyDUjZ8fhisl5BSjutgbnt9dgD2naByRZKQ3HToki6Daf+1qZoegL9wN7L slYg== X-Gm-Message-State: AMke39n9QczG7eLobmS1xBh0GW7dYzBkl0CMq5sbl8CQBsWLKmvRXEGFNt/8RmoYCsqaAA== X-Received: by 10.223.150.15 with SMTP id b15mr15313302wra.191.1488825844062; Mon, 06 Mar 2017 10:44:04 -0800 (PST) Received: from gumby.homeunix.com ([81.17.24.158]) by smtp.gmail.com with ESMTPSA id 186sm15832387wmw.24.2017.03.06.10.44.01 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 06 Mar 2017 10:44:02 -0800 (PST) Date: Mon, 6 Mar 2017 18:43:57 +0000 From: RW To: freebsd-questions@freebsd.org Subject: Re: Off topic: smtp HELO question Message-ID: <20170306184357.60de652b@gumby.homeunix.com> In-Reply-To: <58BD9DC2.9020802@sneakertech.com> References: <58BD94BD.9020405@sneakertech.com> <1350d47b-5723-5171-3cd9-27e9b02aeb8b@FreeBSD.org> <58BD9DC2.9020802@sneakertech.com> X-Mailer: Claws Mail 3.14.1 (GTK+ 2.24.29; amd64-portbld-freebsd10.3) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Mar 2017 18:44:06 -0000 On Mon, 06 Mar 2017 12:34:58 -0500 Quartz wrote: > > So if your NAT transforms internal addresses to W.X.Y.Z and a > > reverse lookup 'host W.X.Y.Z' returns 'foo.example.com' then you > > should configure your mail client to EHLO as 'foo.example.com' > > OK thanks, that's kinda what I was expecting. Unfortunately for me, > my external address floats around depending on what my ISP gives me, > so I can't configure a static name in my client to match that. For > now I'm trying to see what happens if I set it to the name of my > domain I own, but the servers that host that aren't the ones I send > mail through. Don't bother with this. > > >For mail submission you generally > > identify yourself by logging into the server after switching your > > connection to TLS, > > I do use TLS, but what I'm trying to debug is not so much that the > email service *I* use checks, but that the final receiving server > scans through the headers and flags anything with a NAT address. It's probably not that. I suggest you try: https://www.mail-tester.com/ it may reveal what the problem is, unless it's just a BOFH on the receiving end doing something very odd.