From owner-freebsd-questions@freebsd.org Sun Feb 28 23:23:29 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 D0DA754F449 for ; Sun, 28 Feb 2021 23:23:29 +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) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4Dpfb42glVz3LbS for ; Sun, 28 Feb 2021 23:23:28 +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) server-digest SHA256) (No client certificate requested) by h2.pinyon.org (Postfix) with ESMTPSA id 71C9548EF0 for ; Sun, 28 Feb 2021 16:23:26 -0700 (MST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pinyon.org; s=dkim; t=1614554606; 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=I6KJqAzY/y+vBafv4RFC9puA9y5CzLfC1/ZamZOO+xE=; b=ZwlM6THc0zCO/dfXhx/tmhvBSSvDqhjCssKaYts7cEfvMSn+yCQgOn7d9SIed+hsA7ZAlT cdTPi/3NqVz8DbVfrAixoKpkudMqw6DJ5BTUQjiFxveiSd/Smz25oADWNwXsCnbImVIH92 xGEG5vnpPt6oi1QvzYFQLtIunbBeC4k= 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: <5f52eebe-46f6-a5ec-e8e6-fde03a3a61d6@pinyon.org> Date: Sun, 28 Feb 2021 16:23:26 -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=-6.10 X-Rspamd-Server: h2 X-Rspamd-Queue-Id: 4Dpfb42glVz3LbS X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=pinyon.org header.s=dkim header.b=ZwlM6THc; 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: Sun, 28 Feb 2021 23:23:29 -0000 On 2/28/21 2:01 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. I need to study DuoCircle some more but this: =========================================================== Multiple Delivery Ports Need to get around an ISP restriction or firewall blocking outbound SMTP. We accept message relays on following ports: 24, 25, 26, 587, 2525, 10025, 5252. =========================================================== is *very* enticing. Huh. That seems like it would solve a bunch of problems a VPS outgoing SMTP server might have. I like the authentication options too. I am getting excited to be able to exterminate (almost) centurylink's ability to destroy my online presence. Thanks everyone, this has been a very helpful discussion. Russell > _______________________________________________ > 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" >