[UCIMC-Tech] Mailman 2.1.18? - DMARC: Yahoo vs internet mailing lists

[Stuart Levy]

Yes, thank you, having that 2.1.16 from_is_list workaround, even though 
imperfect, would be a great relief!

And, thanks, too, for pursuing hotmail.   Blast them.

On 5/6/14 9:28 AM, Josh King wrote:
> Actually, it looks like there is a (not as good) DMARC workaround in
> 2.1.16. I'm going to try updating to that in order to try it out, and
> see if that will allow us to get around Yahoo until 2.1.18 ends up in
> the repositories officially.
>
> On 05/06/2014 10:25 AM, Josh King wrote:
>> Thanks for tracking down this issue. Unfortunately the newest version
>> of Mailman available for Debian (even unstable) is 2.1.16. We do have
>> our own apt repository, though. I'll see if I can roll an updated dpkg,
>> though it'll be a little risky. It's pretty ridiculous of Yahoo to do
>> this.
>>
>> Btw, I've applied for hotmail delisting twice, but gotten just
>> automated messages repeating the nonsense about namespace mining that
>> shows up in the logs anyway. I'm currently looking at whether I can
>> switch just the mailinglists to a different IP in our allocation to
>> work around it.
>>
>> On Tue 06 May 2014 07:25:18 AM EDT, Jay Schubert wrote:
>>> I can't do the mailman upgraded, but I will mention that BTP really
>>> needs this fixed.  We're dead in the water with our three lists until
>>> this is resolved.
>>>
>>>
>>> On Mon, May 5, 2014 at 11:56 PM, Stuart Levy <stuartnlevy at gmail.com
>>> <mailto:stuartnlevy at gmail.com>> wrote:
>>>
>>>      Dear IMC Tech people,
>>>
>>>      I'm sorry to bother you again, but am wondering if you can help
>>>      with this, or if I can, or both.
>>>
>>>      Having read last month that Yahoo's DMARC mail trust settings were
>>>      breaking mailing lists including the IETF's own -
>>>          http://www.ietf.org/mail-archive/web/ietf/current/msg87153.html
>>>      ... I wondered why it wasn't happening here.   Well, it is.
>>>
>>>      The effect is that, when a Yahoo user writes to an IMC mailing
>>>      list which has other Yahoo users as non-digest recipients, all of
>>>      them - sender and receivers - get bounce messages.   The receivers
>>>      get fatal bounces which immediately suspend them from the list.
>>>      This is happening now.
>>>
>>>      There are workarounds for this in the latest version of Mailman,
>>>      2.1.18, released just this last weekend --
>>>
>>>          release notes here:
>>>
>>>      https://mail.python.org/pipermail/mailman-users/2014-May/076787.html
>>>
>>>          including this:
>>>
>>>            [...] a new Privacy options -> Sender filters -> dmarc_moderation_action
>>>            feature which applies to list messages where the From: address is in a
>>>            domain which publishes a DMARC policy of reject or possibly quarantine.
>>>            This is a list setting with values of Accept, Wrap Message, Munge From, Reject or Discard.
>>>            There is a new DEFAULT_DMARC_MODERATION_ACTION configuration setting to set the
>>>            default for this, and the list admin UI is not able to set an action
>>>            which is 'less' than the default.
>>>
>>>      What would it take to get Mailman 2.1.18 on the chambana.net
>>>      <http://chambana.net> mailing list server?
>>>
>>>      _______________________________________________
>>>      IMC-Tech mailing list
>>>      IMC-Tech at lists.chambana.net <mailto:IMC-Tech at lists.chambana.net>
>>>      https://lists.chambana.net/mailman/listinfo/imc-tech
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> IMC-Tech mailing list
>>> IMC-Tech at lists.chambana.net
>>> https://lists.chambana.net/mailman/listinfo/imc-tech
>> --
>> Josh King
>> PGP Fingerprint: 8269 ED6F EA3B 7D78 F074 1E99 2FDA 4DA1 69AE 4999
>>
>>
>>
>>
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>
>
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