Date: Mon, 06 Mar 2017 14:53:19 -0500 From: Quartz <quartz@sneakertech.com> To: freebsd-questions@freebsd.org Subject: Re: Off topic: smtp HELO question Message-ID: <58BDBE2F.90207@sneakertech.com> In-Reply-To: <20170306184357.60de652b@gumby.homeunix.com> References: <58BD94BD.9020405@sneakertech.com> <1350d47b-5723-5171-3cd9-27e9b02aeb8b@FreeBSD.org> <58BD9DC2.9020802@sneakertech.com> <20170306184357.60de652b@gumby.homeunix.com>
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>> 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. I get a 7/10 (apparently because I never set a SPF to hook my mail service to my domain?).
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