Fw: Yahoo Mailing List Snafu ...

[Jonathan H]

I'm totally lost; I appear to be missing the rest of the thread.

Is it related to this? http://www.virusbtn.com/blog/2014/04_15.xml

I just found that recent email from the get_iplayer list is in spam;
for example, two from Chris and one from Vangelis.

Co-incidentally (or perhaps not) I found that since about March, a LOT
of email from my domain was ending up in people's spam filters, be
they yahoo, hotmail, gmail etc.

Half a day later, I'd found this:

http://www.port25.com/support/authentication-center/email-verification/
Send email to check-auth at verifier.port25.com
If anything comes back "fail", your message is extremely likely to end
up in spam at best, at worst, in a black hole.

You can also try http://isnotspam.com/ which will give you a unique
email address and then a webpage, with a similar report to the above,
but more neatly formatted.

Anyway, after learning what the matter was, 20 minutes later, I had
valid DKIM and SPF records in my DNS, and absolutely NO email has gone
to spam (as far as any testing has shown!).

However, what I DID notice was that I used to be able to mail "on
behalf of" my other account from gmail, but recently that has been
getting caught, too.

Basically, it seems to me that unless I send an email which is DKIM
signed, with a valid spf record, and no different "reply to" header
from the actual sender, there's a high chance my email gets eaten by
some spamcop type thing or other, even if it's the most innocuous
plain text email with zero links or anything remotely dodgy.

Now, this list is setup in a quite (ahem) "unique" way; I wonder if
that might be triggering spam filters?

For example, every single one of the other roughly 25 mailing lists
has headers in the form of:

from:a at b.com
reply-to: list at somelists.org
to: list at somelists.org

but this list has:

from: David Woodhouse <xxxx at infradead.org>
to: Chris J Brady <xxxx at yahoo.com>
cc: get_iplayer <get_iplayer at lists.infradead.org>

(As anyone who's ever replied, you'll know it plays havoc and requires
a fair amount of farting around with
I've not idea why it's like this, but David's list, David's rules I suppose.)

In what way is Yahoo in particular "broken" in this case, though? As
far as I can see, they are simply enforcing something which is 10
years overdue and much needed - ie: no sender spoofing and a valid,
signed, authenticated email.

But I might be guessing here what the problem was, not having see the
rest of the thread.

On 17 April 2014 19:59, David Woodhouse <dwmw2 at infradead.org> wrote:
> On Thu, 2014-04-17 at 11:54 -0700, Chris J Brady wrote:
>> I got this explanation....
>>
>> Chris, very soon all mail providers will change their DMARC policies to the exact SAE policy used by Yahoo right now. All mail lists owners must adapt.
>>
>> Read more here:
>>
>> http://yahoomail.tumblr.com/post/82426900353/yahoo-dmarc-policy-change-what-should-senders-do
>>
>> http://yahoo.tumblr.com/post/82426971544/an-update-on-our-dmarc-policy-to-protect-our-users
>>
>> So it seems Yahoo made changes and the world must follow
>
> Utter nonsense. Yahoo is simply broken. I recommend that you switch to a
> proper email account run by someone competent.
>
> --
> dwmw2
>
>
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