<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 13, 2017 at 7:50 AM, Michael Scherer <span dir="ltr"><<a href="mailto:mscherer@redhat.com" target="_blank">mscherer@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">Le lundi 13 février 2017 à 14:36 +0100, Michael Scherer a écrit :<br>
> Le lundi 13 février 2017 à 02:09 +0100, Michael Scherer a écrit :<br>
> > Le samedi 11 février 2017 à 01:51 +0100, Amye Scavarda a écrit :<br>
> > > Hey there,<br>
> > > Getting a few pings on 'I've been unsubscribed from gluster-users@' - and<br>
> > > my mailman-fu is pretty limited.<br>
> > ><br>
> > > Anyone noticed anything odd in the mailman install? This started on<br>
> > > Thursday, Feb 9 as far as I can tell.<br>
> ><br>
> > Hi,<br>
> ><br>
> > mailman processes are here, so could you provides a bit more information<br>
> > like "who did ping" (so we can start to see if there is a pattern, etc),<br>
> > or even better, direct people to contact the list and/or open a bug<br>
> > report so this can be tracked properly ?<br>
><br>
> So, I did search more after reading all my emails, and the answer is<br>
> long but can be summarized by "yahoo and google suck, and we are in the<br>
> middle".<br>
><br>
> It seems that someone used a yahoo email to post on gluster-users. So<br>
> far, so good, but Yahoo do have a specific DMARC policy that prevent<br>
> sending email from yahoo from a non yahoo server. It also break mailling<br>
> lists for provider who do respect DMARC policy:<br>
> <a href="https://thehackernews.com/2014/04/yahoos-new-dmarc-policy-destroys-every.html" rel="noreferrer" target="_blank">https://thehackernews.com/<wbr>2014/04/yahoos-new-dmarc-<wbr>policy-destroys-every.html</a><br>
><br>
> And among the ones that do strongly verify DMARC (instead of using it as<br>
> a indicator, since that's slightly less prone to breakage) is gmail, who<br>
> just block at the smtp level mail if the dmarc policy say so.<br>
><br>
><br>
> Usually, this is not a problem, since email just get dropped after a<br>
> while.<br>
><br>
> But this time, my hypothesis is that the person who did post did send<br>
> enough to trigger a threshold in mailman to unsubscribe people (ie, more<br>
> than 5 bounces). So all the gmail subscribers got removed.<br>
><br>
> But we have logs, so I am gonna resubscribe everybody.<br>
><br>
> From here, we have several solutions:<br>
> - raise the bounce limit to 10. This doesn't fix the issue, but should<br>
> minimize it for the time being<br>
><br>
> - make sure people who use yahoo email can't subscribe. If their email<br>
> provider break the list and can't work, we can't do much<br>
<br>
</div></div>So while I didn't unsubscribe anyone, i did contact the user to explain<br>
his options (especially the part where we can't do much on why 1/3 of<br>
the list do not get his email :/ )<br>
<div class="HOEnZb"><div class="h5"><br>
--<br>
Michael Scherer<br>
Sysadmin, Community Infrastructure and Platform, OSAS<br>
<br>
<br>
</div></div><br>______________________________<wbr>_________________<br>
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<a href="mailto:Gluster-infra@gluster.org">Gluster-infra@gluster.org</a><br>
<a href="http://lists.gluster.org/mailman/listinfo/gluster-infra" rel="noreferrer" target="_blank">http://lists.gluster.org/<wbr>mailman/listinfo/gluster-infra</a><br></blockquote></div><br>Much appreciated on the dig into this. </div><div class="gmail_extra">I maintain that this is still a black art.</div><div class="gmail_extra">- amye <br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Amye Scavarda | <a href="mailto:amye@redhat.com" target="_blank">amye@redhat.com</a> | Gluster Community Lead</div></div>
</div></div>