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Re: [Phys-L] Yahoo does not play nicely with mailing lists



On 05/15/2016 02:10 PM, Donald Polvani asked:

So does Yahoo cause not only outgoing messages from Moses, but also
incoming messages to him (from non-Yahoo internet providers) to be
classified as spam? Is this because my Verizon originated message,
after receipt and re-transmission by Phys-L (with whatever internet
provider is used by Phys-L) went first to Yahoo who then
re-transmitted it to Moses?

It's complicated. Messes like this almost never exhibit
single-factor causation. There is a /chain/ of causation.

Everybody who touches the email message can make decisions
about how to handle (or mishandle) it. In this case Verizon
can decide to perform whatever checks it likes.

Their bad decision is to look at the domain in the From: address,
namely yahoo.com, and perform the DKIM checks requested by yahoo.
The /proximate/ bad decision is when Verizon puts the message
into your spam folder.

That however is based on bad decisions by yahoo, who wants the
message to be treated as forged ... even though it wasn't
forged but merely forwarded.

-- The consensus among people who understand email is that
yahoo is clearly in the wrong here. Forwarding is not forgery.
Group discussions are not spam.
-- Verizon is partly in the wrong for trusting yahoo. This mess
has been going on for almost two years now, and Verizon should
have figured it out by now. (At least they kept the message
in the spam folder, as opposed to throwing it away completely.)

I guess this is a selling point for yahoo. If you want to be
"protected" from participation in phys-l, sign up with yahoo.