I understand from Florence that all bounces are triggered by emails sent by
the same person. If related to this, it could get nasty:
http://www.pcworld.com/article/2141120/yahoo-email-
antispoofing-policy-breaks-mailing-lists.html

Lodewijk

On Sun, Jul 16, 2017 at 3:23 PM, Florence Devouard <[email protected]>
wrote:

> Hello
>
> The owners of the list just received a collection of notifications from
> [email protected]
>
> Topic: Bounce action notification
>
> Typical message received
>
> This is a Mailman mailing list bounce action notice:
>
>     List:       Wikimediafr
>     Member:     an email address <[email protected]>
>     Action:     Subscription disabled.
>     Reason:     Excessive or fatal bounces.
>
>
>
> The triggering bounce notice is attached below.
>
> Questions? Contact the Mailman site administrator 
> [email protected].
>
>
> ------
>
> The attached document features
>
> Sujet :
> Mail delivery failed: returning message to sender
>
> De :
> Mail Delivery System <[email protected]>
> <[email protected]>
>
> Date :
> 16/07/2017 14:09
> Pour :
> [email protected]
>
>
> This message was created automatically by mail delivery software.
>
> A message that you sent could not be delivered to one or more of its
> recipients. This is a permanent error. The following address(es) failed:
>
>   An email address <[email protected]>
>     SMTP error from remote mail server after end of data:
>     host gmail-smtp-in.l.google.com [173.194.66.27]:
>     550-5.7.1 Unauthenticated email from yahoo.fr is not accepted due to 
> domain's
>     550-5.7.1 DMARC policy. Please contact the administrator of yahoo.fr 
> domain if
>     550-5.7.1 this was a legitimate mail. Please visit
>     550-5.7.1  https://support.google.com/mail/answer/2451690 to learn about 
> the
>     550 5.7.1 DMARC initiative. r67si3673368qkr.391 - gsmtp
>
>   An email address <[email protected]>
>     SMTP error from remote mail server after end of data:
>     host gmail-smtp-in.l.google.com [173.194.66.27]:
>     550-5.7.1 Unauthenticated email from yahoo.fr is not accepted due to 
> domain's
>     550-5.7.1 DMARC policy. Please contact the administrator of yahoo.fr 
> domain if
>     550-5.7.1 this was a legitimate mail. Please visit
>     550-5.7.1  https://support.google.com/mail/answer/2451690 to learn about 
> the
>     550 5.7.1 DMARC initiative. r67si3673368qkr.391 - gsmtp
>
> etc. etc. etc.
>
> At the end of all of which, I see
>
> ------ This is a copy of the message, including all the headers. ------
>
> Return-path: <[email protected]> 
> <[email protected]>
> Received: from localhost ([::1]:36576 helo=fermium.wikimedia.org)
>       by fermium.wikimedia.org with esmtp (Exim 4.84_2)
>       (envelope-from <[email protected]> 
> <[email protected]>)
>       id 1dWiMp-0004Q5-F6; Sun, 16 Jul 2017 12:09:43 +0000
> Received: from sonic303-23.consmr.mail.ir2.yahoo.com ([77.238.178.204]:41383)
>  by fermium.wikimedia.org with esmtps
>  (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2)
>  (envelope-from <[email protected]> <[email protected]>) id 1dW8AO-0005kw-U0
>  for [email protected]; Fri, 14 Jul 2017 21:30:29 +0000
> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.fr; s=s2048;
>  t=1500067827; bh=H0kKlQUk5veAFbi03/U9y+O19wVtODUQh3qxSVcacZk=;
>  h=Date:From:Reply-To:To:Cc:Subject:References:From:Subject;
>  
> b=o5jowvpe5tn4x6xMBXvjwoJuwMsrmu9BXygb+TXyWCoCX27aOoq2OmCl5vH3kE1fEdyF78ABFmZ+GflVUv1mjgz7zbjtHcuaFRC4XMI7NdFTle2sPwBZV+QRzka07uFFJ1+HgHDTGeaCMy5FhU9F4u3227XNYShb/CJ9ktPw74izlXvnBtyPmVwbomKq0I92pyXtA9ZZjL65Kv3pANQkPRjz0ou37JPbdOfsuZh5picX5/0s+61Lg5oKbqDHyzHWJwM9iaJ9ThuDHxYRP8zp0z4CyacDs1spr8tVsYpKTxYkOY5Ye4eDbQgVYTj0kqUG8whmCMZIm1ZD4OMg1d8Fyw==
> X-YMail-OSG: uoV.n9oVM1lxp3LakqZ_JxzYgcLqTcH2LbGw.iOAoaMcqq7TACkLGMBF6zQymA.
>  q8P2mKlAGOLjLOshr_G5Mg6Nr4ASIkQ.41ScEtYvzSBfxQJv2OQJwfD85PeHFjmpwGrPsuMZ67QL
>  INHDHNH4JW6ML4BwihSoRVYlMLooTLRcj0uK5wyQzCit8gzyGMH7xW3nR6aoTTuqtAJ2CtcOfxHF
>  4hhR7uAh5Nj5CEsrUIOINxjmy1Sx0W6Tqby58pdDlXVUjMZqm2pkPt8N0M6UIi4kxoNEyg6rdxRw
>  7sYl54M8T5F6vxST.d0SOhHw8.Wvp7ldOY1HUB8rUc.keTG.BMVxjWnW0ITIscp3U5tPs5EyL4PH
>  u.HBhVlT4rKqMmZycCLLWS.ACpDKZNAgXzKfH9fwzkYYowvgxfamkZFfcHPJTT2Y23lqDwbm7rRX
>  4A5OQw2WeLAY0MSVAahDKHj5dgPolb9ltnKvXIk0CaImH8xgfNZESeKILW1WnicQ8ABdv48GFZcC
>  ZxHR8v3eJqreQBpLCpTSJQ8y3VdrmeMEPESlLwDDpcJdBDu.z8DNsEOhuOEYOjYwggrOBtL2Zme.
>  vMx9rZphbnEvtGREpVRVLjj5YhqUGc1dzUx0s6Uqm_7fbRIRTpsA8GPSdvGB7R0j9a5.rrDRYTZn
>  jfmxq5z76
> Received: from sonic.gate.mail.ne1.yahoo.com by
>  sonic303.consmr.mail.ir2.yahoo.com with HTTP; Fri, 14 Jul 2017 21:30:27 +0000
> Date: Fri, 14 Jul 2017 21:30:26 +0000 (UTC)
> From: Olivier Morand <[email protected]> <[email protected]>
> To: Wikimedia France Public Mailing List <[email protected]> 
> <[email protected]>
> Message-ID: <[email protected]> 
> <[email protected]>
> MIME-Version: 1.0
> References: <[email protected]> 
> <[email protected]>
> X-Mailer: WebService/1.1.10092 YahooMailNeo Mozilla/5.0 (Windows NT 6.3; 
> WOW64;
>  rv:54.0) Gecko/20100101 Firefox/54.0
> Content-Length: 9571
> X-Mailman-Approved-At: Sun, 16 Jul 2017 12:09:41 +0000
> Subject: Re: [Wikimediafr]
>       =?utf-8?q?missions_du_CA_=28was=3APr=C3=A9paration_?=
>       =?utf-8?q?de_l=27AG=29?=
> X-BeenThere: [email protected]
> X-Mailman-Version: 2.1.18
> Precedence: list
>
> etc...
>
>
> ------------------
>
> I have no idea what it means. I have no idea what to do. HELP !
>
>
> Anthere
>
>
>
> _______________________________________________
> Listadmins mailing list
> [email protected]
> https://lists.wikimedia.org/mailman/listinfo/listadmins
>
>
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