Bounce on users lists

[Sandro Bonazzola]

Il 16/01/2015 09:18, Michael Scherer ha scritto:
> Le vendredi 16 janvier 2015 à 08:23 +0100, Sandro Bonazzola a écrit :
>> Il 15/01/2015 18:31, Michael Scherer ha scritto:
>>> Hi,
>>>
>>> Itamar, by the proxy of Brian, did asked me to look on the bounce issue
>>> we have on the users lists. So after a few hours of careful log reading,
>>> here is my finding.
>>>
>>> The bounce situation
>>> ---------------------
>>>
>>> We (ml admin) get on a regular basis people who get unsubscribed and
>>> message about bounce. People being unsubscribed automatically is
>>> bad(tm), and bounces are annoying. 
>>>
>>>
>>> Investigation
>>> -------------
>>>
>>> A first look show that our mails are bounced as they are marked as spam
>>> by Google. Google doc on the matter do not give much, some people point
>>> to using dkim, spf, etc. But spf is not for us, but for the sender, and
>>> dkim is not ml friendly, afaik, and requires upstream support if I
>>> understood well.
>>>
>>> Not all mails are bounced, which is good. That mean the ip is not
>>> problematic. 
>>>
>>> So I took a few hours to look on every bounce and roughly, there is 2
>>> groups.
>>>
>>> Group 1
>>> --------
>>>
>>> First group is that all mail from the same poster on the users list have
>>> bounced at Google. Out of the 16 mail he sent, 16 have been rejected by
>>> Google. I have no idea why, I suspect the spf policy, but it did looked
>>> ok. None of the mail of answer had a issue, so that's likely not a
>>> content problem.  
>>>
>>> However, the ip address of the sender is in the SORBS blacklist, so
>>> that's likely what trigger Google spam filter.
>>>
>>> Not much we can do, besides contacting him, which I will do.
>>>
>>> Group 2
>>> --------
>>> Roughly, that's mail in this thread :
>>> http://lists.ovirt.org/pipermail/users/2015-January/030494.html
>>>
>>> and the mails from Sandro :
>>> http://lists.ovirt.org/pipermail/users/2015-January/030420.html
>>> http://lists.ovirt.org/pipermail/users/2015-January/030423.html
>>>
>>> Common point, use of goo.gl and ur1.ca. It turn out that both domain are
>>> flagged as URI spam, since that's used by spammer to hide their link. So
>>> I suspect that Gmail started to "learn" about them as spam, as the rest
>>> of the world did :
>>> http://multirbl.valli.org/lookup/ur1.ca.html
>>> http://multirbl.valli.org/lookup/goo.gl.html
>>>
>>> Again, not much we can do, besides asking to people to not use these
>>> services ( which is not gonna work I think ).
>>
>> I may try to use bit.ly red.ht instead of goo.gl.
>> Can we provide our own url shortener on ovirt.org? That should avoid blacklisting.
> 
> I do not think bit.ly is gonna change much. It is likely abused for the
> same reason by the same people. And the url are too complicated to be
> sent sometime, so we cannot just avoid them at all.
> 
> I also pondered about adding a url shortener on ovirt.org. Besides the
> load on admin team it create, I think it would have the same issue as
> the others after some time, and so we would need to add some
> authentication, which start to make thing a bit complicated. 

Not sure if authentication will work as expected, but this one seems quite simple to configure and deploy:
https://github.com/mrtazz/katana


> 
> 
> 
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-- 
Sandro Bonazzola
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