[kwlug-disc] Confirmation of meeting announcement

[Bob Jonkman]

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I think Yahoo is rejecting mailing list messages that originate from
@yahoo.* addresses.  So Yahoo users don't see their own messages, or
any other messages from other Yahoo originators. The rest of us have
no problem.

Yahoo has implemented DMARC, which tries to verify that the address
headers are all consistent. But on a mailing list the message sender
is the mailing list (kwlug-disc-bounces at kwlug.org), the server
delivering the message is from CCj/Clearline, and the originator's
"From" address could be somebody at yahoo.com.  DMARC throws a hissy fit,
and Yahoo mail discards the incoming message because it looks spoofed.

My guess is that Yahoo raised the rejection threshold by another notch
in the last few weeks, resulting in problems for their users who use
mailing lists.


Christopher Browne from the GTALUG mailing list conveniently supplied
this link:

http://www.pcworld.com/article/2141120/yahoo-email-antispoofing-policy-breaks-mailing-lists.html

Seems Yahoo mail users on GTALUG are equally affected.

My advice? Stop using Yahoo mail.

- --Bob.



- --
Bob Jonkman <bjonkman at sobac.com>          Phone: +1-519-635-9413
SOBAC Microcomputer Services             http://sobac.com/sobac/
Software   ---   Office & Business Automation   ---   Consulting
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On 2016-04-02 05:04 PM, B.S. via kwlug-disc wrote:
>> ________________________________ From: Khalid Baheyeldin via
>> kwlug-disc <kwlug-disc at kwlug.org> To: KWLUG discussion
>> <kwlug-disc at kwlug.org> Cc: Khalid Baheyeldin <kb at 2bits.com> Sent:
>> Saturday, April 2, 2016 8:38 AM Subject: Re: [kwlug-disc]
>> Confirmation of meeting announcement
>> 
>> 
>> I got it just fine.
>> 
>> Yahoo has been overly restrictive in the past few months.
>> 
>> Not only to this list, but in general.
>> 
>> 
>> On Fri, Apr 1, 2016 at 7:17 PM, Paul Nijjar
>> <paul_nijjar at yahoo.ca> wrote:
>>> I have been experiencing weirdness with the KWLUG lists lately.
>>> I am not getting my own emails sent to the list. That is not a
>>> tragedy, but I do not know whether anybody else is getting my
>>> emails either. Could somebody confirm that my message to
>>> kwlug-announce went through? It shows up in the list archives,
>>> but I do not trust that.
> 
> 
> Anyone have a real answer as to what's really going on?
> 
> To the sender, it doesn't appear the message went through - because
> they don't see a copy come back to them from the list. Nor is there
> any error message. (So Paul's link doesn't feel to me like an exact
> answer for what's going on.)
> 
> Yet the list gets it, so the message was accepted by Yahoo for
> forwarding. And it is the list that does the sending to the group,
> not the user (Yahoo). (Back to the sending user.)
> 
> And other messages from the list come to the user, so was accepted
> for receiving by Yahoo.
> 
> So I don't really get what's wrong / how/why it is not working for
> Yahoo senders, some of the time. It feels like inconsistent
> application by the Yahoo servers themselves, and thus not something
> anyone can do anything about - Yahoo has to fix their servers, it
> seems.
> 
> [FWIW - I do yahoo email via the web, or could do it via
> thunderbird, so it's yahoo smtp/imap, and thus Paul's link wouldn't
> seem to apply. I suppose I could set up another address at
> something like openmailbox.org and auto-forward it or something.]
> 
> 
> _______________________________________________ kwlug-disc mailing
> list kwlug-disc at kwlug.org 
> http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
> 
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