From owner-freebsd-questions@freebsd.org Tue Mar 7 18:31:40 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 32565D00126 for ; Tue, 7 Mar 2017 18:31:40 +0000 (UTC) (envelope-from jjohnstone@tridentusa.com) Received: from mail.tridentusa.com (mail.tridentusa.com [96.225.19.3]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mail.tridentusa.com", Issuer "mail.tridentusa.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id ED8D71816 for ; Tue, 7 Mar 2017 18:31:39 +0000 (UTC) (envelope-from jjohnstone@tridentusa.com) Received: (qmail 63942 invoked from network); 7 Mar 2017 13:24:56 -0500 Received: from pool-108-53-138-183.nwrknj.fios.verizon.net (HELO ?192.168.1.156?) (jjohnstone@tridentusa.com@108.53.138.183) by mail.tridentusa.com with SMTP; 7 Mar 2017 13:24:56 -0500 Subject: Re: Off topic: smtp HELO question To: freebsd-questions@freebsd.org References: <58BD94BD.9020405@sneakertech.com> <1350d47b-5723-5171-3cd9-27e9b02aeb8b@FreeBSD.org> <58BD9DC2.9020802@sneakertech.com> <20170306184357.60de652b@gumby.homeunix.com> <58BDBE2F.90207@sneakertech.com> From: John Johnstone Message-ID: <537cf87f-f60d-5e71-c6a2-1cb94cfcc649@tridentusa.com> Date: Tue, 7 Mar 2017 13:24:56 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.7.1 MIME-Version: 1.0 In-Reply-To: <58BDBE2F.90207@sneakertech.com> Content-Type: text/plain; charset=windows-1252; format=flowed 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: Tue, 07 Mar 2017 18:31:40 -0000 On 3/6/17 2:53 PM, Quartz wrote: > I get a 7/10 (apparently because I never set a SPF to hook my mail > service to my domain?). If the fundamentals of your outgoing mail server aren't good enough, any hair-splitting differences with submission are irrelevant. I'd not spend any time worrying about your Thunderbird configuration unless you have evidence that it's a problem somewhere. You need to be especially careful that you have correctly implemented SPF or DKIM. Some mail servers will regard incorrect configurations worse than none. If your "external address floats around depending on what my ISP gives me" means that your mail server has an address in an ISP's DHCP address space, you're at a major disadvantage right there. Many mail servers will reject or score badly mail that comes from a dynamic IP. If you can't get a domain name of your choice (e.g. mail.your-domain-name.tld) assigned to your external IP, even if it is static, that's a major problem. You can lookup your IP at Spamhaus and if it's listed in the PBL you're almost guaranteed to have delivery problems. If you're operating your own mail server your volume may be too low to have an meaningful reputation but you can check your IP at someplace like SenderBase. You can do a web search on "email delivery". Sad to say but it's not a trivial topic in today's world. - John J.