[Mailman-Users] Gmail and DMARC

[Jim Popovitch]

On Fri, Apr 25, 2014 at 12:48 PM, Lindsay Haisley <fmouse at fmp.com> wrote:
> On Fri, 2014-04-25 at 11:54 -0400, Jim Popovitch wrote:
>> http://support.google.com/mail/bin/answer.py?answer=14257
>> >                 b6sm884241igm.2 - gsmtp (in reply to MAIL FROM
>> command))
>> >
>> > So for some period of time, they wanted Mailman to auth as who? :-)
>>
>> OK, that wasn't an odd hiccup, that was/is intentional action by
>> google.  Gmail now seems to be bouncing email where From: is another
>> gmail account.
>
> I'm not seeing this in my mail logs here.  The URL cited in the log
> entry gives no reason for such a policy.  The mail log here shows a
> number of 5.1.1 bounces of list mail to gmail.com addresses for a number
> of reasons, but this isn't one of them.
>
> # grep gmail mail.log|grep [listname]|grep "5\.1\.1"
>
> Should I be looking for something else?  About 25% of the subscribers on
> our biggest discussion list are gmail.com subscribers.

TBH, I'm not sure what else there is to look for. :-)  GMail, every so
often, is telling my Mailman that it needs to Auth in order to reflect
From:gmail to other gmail customers.  It's like DMARC without
following the DMARC standard (GMail has a p=none policy).

-Jim P.