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Re: Own MTA is hard (was: chromebook)

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	Hi.

On Thu, Jul 11, 2019 at 10:22:40AM +0200, tomas@tuxteam.de wrote:
> On Wed, Jul 10, 2019 at 10:33:58PM -0400, Kenneth Parker wrote:
> > On Tue, Jul 9, 2019 at 12:52 PM Greg Wooledge <wooledg@eeg.ccf.org> wrote:
> > 
> > > On Tue, Jul 09, 2019 at 06:48:22PM +0200, mjonsson1986@gmail.com wrote:
> > > > <html xmlns:o="urn:schemas-microsoft-com:office:office"
> > > xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="
> > > http://schemas.microsoft.com/office/2004/12/omml" xmlns="
> > > http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type
> > > content="text/html; charset=utf-8"><meta name=Generator content="Microsoft
> > > Word 15 (filtered medium)"><style><!--
> > >
> > > Please post only text, not HTML.  If your email agent *cannot* do plain
> > > text alone, at least configure it to send both plain text and HTML.  Or,
> > > y'know, get a better email agent.
> > >
> > 
> > As a Gmail User, but with a corporate (Universe?) email address (
> > sea7kenp@eyeblinkuniverse.com), running on a hosted Ubuntu 16.04.6 Server
> > with Exim4 4.86.2 running its Mail.  I administer it via ssh, and get email
> > via alpine 2.20.  I used to use that corporate email for my technical email
> > lists, until Gmail started putting MY OWN email into my Spam Folder.  I
> > just tried it now.  Google's Error message:  "Why is this message in spam?
> > It is in violation of Google's recommended sender guidelines",  So now,
> > Google is running the Internet?  Those Universe emails were DEFINITELY text
> > only!
> 
> Most probably you'll have to implement SPF and/or DKIM [1, 2]

Both, and a DMARC too. Also, valid PTR records. While not required by
any RFC, valid PTRs are considered mandatory by some big players like
GMail.


> As this was happening to me more and more (people "on" some variant of
> googlemail, or hotmail/outlook/some other Microsoft mail thingy, etc.
> not receiving my mails -- and digging further yes, receiving them in
> their spam folders and thus not seeing them), I bit the bullet and
> went for SPF/DKIM (I hadn't the guts for DMARC yet, I don't particularly
> like that one).

DKIM is very straightforward. There are some "gotchas" if you're sending
mails to the maillists - some maillists just love to modify arbitrary
e-mail headers, which leads to failed DKIM checks - but they can be
solved.

Reco

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Re: chromebook Greg Wooledge <wooledg@eeg.ccf.org> - 2019-07-09 19:00 +0200
  Re: chromebook Dan Purgert <dan@djph.net> - 2019-07-10 02:20 +0200
  Re: chromebook John Crawley <john@bunsenlabs.org> - 2019-07-10 03:40 +0200
    Re: chromebook Andrei POPESCU <andreimpopescu@gmail.com> - 2019-07-10 06:30 +0200
      Re: chromebook Joe <joe@jretrading.com> - 2019-07-10 09:20 +0200
      Re: chromebook <tomas@tuxteam.de> - 2019-07-10 09:30 +0200
        Re: chromebook Andrei POPESCU <andreimpopescu@gmail.com> - 2019-07-10 22:00 +0200
    Re: chromebook Reco <recoverym4n@enotuniq.net> - 2019-07-10 08:40 +0200
      Re: chromebook Greg Wooledge <wooledg@eeg.ccf.org> - 2019-07-10 15:10 +0200
        Re: mutt vs HTML (was: chromebook) Reco <recoverym4n@enotuniq.net> - 2019-07-10 16:10 +0200
      Re: HTML mail (was: chromebook) John Crawley <john@bunsenlabs.org> - 2019-07-11 05:50 +0200
        Re: HTML mail (was: chromebook) Andrei POPESCU <andreimpopescu@gmail.com> - 2019-07-11 08:30 +0200
          Re: HTML mail John Crawley <john@bunsenlabs.org> - 2019-07-11 09:00 +0200
            Re: HTML mail Gene Heskett <gheskett@shentel.net> - 2019-07-11 09:20 +0200
            Re: HTML mail Andrei POPESCU <andreimpopescu@gmail.com> - 2019-07-11 09:20 +0200
              Re: HTML mail <tomas@tuxteam.de> - 2019-07-11 10:10 +0200
                Re: HTML mail Brad Rogers <brad@fineby.me.uk> - 2019-07-11 11:20 +0200
                Re: HTML mail <tomas@tuxteam.de> - 2019-07-11 11:40 +0200
                Re: HTML mail Brad Rogers <brad@fineby.me.uk> - 2019-07-11 16:00 +0200
                Re: HTML mail Greg Wooledge <wooledg@eeg.ccf.org> - 2019-07-11 16:10 +0200
                Re: HTML mail Dan Purgert <dan@djph.net> - 2019-07-11 19:00 +0200
                Re: HTML mail Carl Fink <carl@finknetwork.com> - 2019-07-11 20:20 +0200
                Re: HTML mail John Hasler <jhasler@newsguy.com> - 2019-07-11 14:30 +0200
                Re: HTML mail <tomas@tuxteam.de> - 2019-07-11 14:50 +0200
                Re: HTML mail Gene Heskett <gheskett@shentel.net> - 2019-07-11 18:00 +0200
                Re: HTML mail Thomas D Dial <tdial@acm.org> - 2019-07-11 21:30 +0200
                Re: HTML mail tomas@tuxteam.de - 2019-07-12 09:30 +0200
                Re: HTML mail Brad Rogers <brad@fineby.me.uk> - 2019-07-11 16:00 +0200
                Re: HTML mail David Wright <deblis@lionunicorn.co.uk> - 2019-07-11 17:20 +0200
              Re: HTML mail John Crawley <john@bunsenlabs.org> - 2019-07-11 13:20 +0200
  Re: chromebook Kenneth Parker <sea7kenp@gmail.com> - 2019-07-11 04:40 +0200
    Re: chromebook <tomas@tuxteam.de> - 2019-07-11 10:30 +0200
      Re: Own MTA is hard (was: chromebook) Reco <recoverym4n@enotuniq.net> - 2019-07-11 10:40 +0200
        Re: Own MTA is hard (was: chromebook) <tomas@tuxteam.de> - 2019-07-11 10:50 +0200
      Re: chromebook John Hasler <jhasler@newsguy.com> - 2019-07-11 18:40 +0200
        Re: chromebook <tomas@tuxteam.de> - 2019-07-12 09:40 +0200
          Re: chromebook Curt <curty@free.fr> - 2019-07-12 10:00 +0200
            Re: chromebook <tomas@tuxteam.de> - 2019-07-12 10:40 +0200
          [Off-topic] John Hasler <jhasler@newsguy.com> - 2019-07-12 16:00 +0200
            Re: [Off-topic] <tomas@tuxteam.de> - 2019-07-12 16:30 +0200
            Re: [Off-topic] Reco <recoverym4n@enotuniq.net> - 2019-07-12 19:00 +0200
              Re: [Off-topic] Diagonal Arg <debian.org@niwas.net> - 2019-07-17 04:20 +0200
                Re: [Off-topic] Nicholas Geovanis <nickgeovanis@gmail.com> - 2019-07-17 18:30 +0200
    Re: chromebook rhkramer@gmail.com - 2019-07-11 14:00 +0200
      Re: chromebook <tomas@tuxteam.de> - 2019-07-11 14:50 +0200
        Re: chromebook Keith Bainbridge <keithrbau@gmail.com> - 2019-07-17 06:30 +0200
          Re: chromebook Diagonal Arg <debian.org@niwas.net> - 2019-07-17 06:50 +0200
            Re: chromebook <tomas@tuxteam.de> - 2019-07-17 09:10 +0200

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