From owner-freebsd-questions@freebsd.org Mon Mar 1 00:37:00 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 56E2D5518AC for ; Mon, 1 Mar 2021 00:37:00 +0000 (UTC) (envelope-from rcarter@pinyon.org) Received: from h2.pinyon.org (h2.pinyon.org [65.101.20.170]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4DphCv3Y1Wz3QkN for ; Mon, 1 Mar 2021 00:36:59 +0000 (UTC) (envelope-from rcarter@pinyon.org) Received: from [10.0.10.15] (unknown [10.0.10.15]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by h2.pinyon.org (Postfix) with ESMTPSA id 1DF2E49312 for ; Sun, 28 Feb 2021 17:36:58 -0700 (MST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pinyon.org; s=dkim; t=1614559018; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=o1RL8OzBwGUgzT8ZvmYCzFKC8aucmeS7CxL/EyQEj/M=; b=FrJIUpyi2UGjBQWSIILdRgySwmlntcIbeOdqiYLyZBM4S2B+8jbu9GeTmqh5kApxGq64OM DXDGmetht1YaErscVk2wwW7OJP4m7ZbaOJwMkVA+cNjANhls5BSqedCp7A/qmLOfOH8lo4 2tsJ6pynfWCeoL/6qw4zWlcL5FEGvxs= Subject: Re: Somewhat OT: Mail Relay Services To: freebsd-questions@freebsd.org References: <877d08ef-d533-69f6-4c44-f2cbbe39ba31@tundraware.com> <000001d70dff$23f1cdf0$6bd569d0$@gsicomp.on.ca> From: "Russell L. Carter" Message-ID: <0f796363-6444-596e-d3c6-6eaf341f9298@pinyon.org> Date: Sun, 28 Feb 2021 17:36:57 -0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-6.05 X-Rspamd-Server: h2 X-Rspamd-Queue-Id: 4DphCv3Y1Wz3QkN X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=pinyon.org header.s=dkim header.b=FrJIUpyi; dmarc=none; spf=pass (mx1.freebsd.org: domain of rcarter@pinyon.org designates 65.101.20.170 as permitted sender) smtp.mailfrom=rcarter@pinyon.org X-Spamd-Result: default: False [-3.50 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[pinyon.org:s=dkim]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[65.101.20.170:from:127.0.2.255]; DMARC_NA(0.00)[pinyon.org]; DKIM_TRACE(0.00)[pinyon.org:+]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RBL_DBL_DONT_QUERY_IPS(0.00)[65.101.20.170:from]; ASN(0.00)[asn:209, ipnet:65.101.0.0/18, country:US]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Mar 2021 00:37:00 -0000 On 2/28/21 5:19 PM, Tim Daneliuk via freebsd-questions wrote: > On 2/28/21 3:01 PM, Tim Daneliuk wrote: >> On 2/28/21 12:25 PM, matt@gsicomp.on.ca wrote: >>> Like anything to do with email, it's not entirely as simple as it sounds. >>> DuoCircle requires per-domain setup via their UI ("permitted senders"), plus >>> you need to set up SPF and DKIM keys for each domain. >>> This was a hard slog for 100+ domains but has been entirely worth the >>> initial effort and ongoing cost to avoid mail delivery complaints from >>> customers that are entirely beyond my control. >> >> Thanks Matt (and everynone else who had suggestions) - >> >> This seems to work just fine, as evidenced by the headers in this >> very email. >> > > The only other thing I have found that I do not like is that DuoCircle > appears to keep a copy of every email sent including the body content > in their logs. Oh dear, there's always a catch. This wouldn't be an issue if encrypted body content was a thing but all the time that I had active pgp keys and some savvy correspondents I got, over a few years, maybe a half dozen encrypted bodies. I am inclined to think of it this way: can't trust TLS relays at all, and they're just another relay. At least I can send mail. Am I being naive? Russell > ---------------------------------------------------------------------------- > Tim Daneliuk tundra@tundraware.com > PGP Key: http://www.tundraware.com/PGP/ > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >