[RndTbl] Gmail spam filtering super-aggressive lately

Hartmut W Sager hwsager at marityme.net
Tue Mar 31 02:17:17 CDT 2020

Replies embedded below.

Hartmut W Sager - Tel +1-204-339-8331

On Tue, 31 Mar 2020 at 01:06, Trevor Cordes <trevor at tecnopolis.ca> wrote:

> On 2020-03-31 Hartmut W Sager wrote:
> > > If I tell mailman to send me a copy too,
> > > then I'll always get 2 copies.
> >
> > Except if you're using Gmail as your infrastructure (like I am).
> > Gmail only posts the message once when it recognizes the unique
> > Message-ID as duplicated, even if the multiple messages come into
> > "To" and/or "cc" via different target e-mail addresses (which is
> > often my case).
> >
> > I hate to make Gmail look good, especially when I started this "bash
> > Gmail" thread, but hey, they do a few things right.  (Like labels!)
> Good one Hartmut! :-)  However, the key to the dedupe is your MUA would
> have to eliminate the one that addresses you personally, and keep the
> one from the mailing list.  I doubt gmail is *that* smart, or
> configurable (as some people would prefer to get the personal one
> instead!).

You're right, Gmail is definitely not *that* smart, and is not at all
configurable in any way even approaching such a wish.

> I bet what gmail is doing is just throwing away the 2nd one
> it sees (temporally), which in many cases (like my greylisted system)
> is going to be random.

Probably.  And here's worse:  Sometimes, when I've posted to our
RoundTable, Gmail doesn't even bring anything into my Inbox, because those
round-trip items match the sent item in my Sent label.  Furthermore, it
doesn't replace the sent item with one of the incoming round-trip items
either, so I can't see the full header (of at least one round-trip item) to
see the routing and the SPF/DKIM/DMARC results (which was highly relevant
earlier on in this very thread).

> But... you did give me an idea... I could procmail something up that
> will look at (hopefully id'able) mailing list emails (whether private
> or mailman-sent), delay sending the first it sees (will procmail
> happily let a handler script sleep?), see if there's a second, then
> pick the one that is mailman-generated over the personal one (and
> deliver the 1st/only one if a 2nd never comes in a reasonable amount of
> time).  Voila.

Great idea!  A good exercise for an eager student.

> Try a procmail rule with gmail!  ;-)

Ha ha!
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