[Systems] email from sugar labs lists tends to fall into SPAM folder...

[Samuel Cantero]

Yes, you are right. Definitely, DMARC will be useful in the @sugarlabs.org
domain. But I guess it won't be as helpful in @lists.sugarlabs.org. Every
email from @lists.slo is sent through sunjammer and hence every email will
be signed. In this case, a 100% DKIM success rate is expected. Therefore,
in this particular case, DMARC will be useful if we want to get data
reports in order to analyze our mail streams or if we want to set a reject
policy for all not-aligned messages.

The recommended process to apply DMARC is: (1) publish a DMARC record with
a "none" flag set for the policies, which requests data report; (2) analyze
the data and modify your mail streams as appropriate and (3) modify your
DMARC policy flags from “none” to “quarantine” to “reject” as you gain
experience. So, a good start would be trying to apply this steps. What
would be the correct destination email address to receive the data reports?

In this particular case we are looking this at the sender's perspective. I
have no knowledge about how to process this DMARC header as a email
receiver.

Regards,


On Mon, Nov 9, 2015 at 12:10 PM, Bernie Innocenti <bernie at codewiz.org>
wrote:

> On 11/08/2015 07:53 PM, Sebastian Silva wrote:
> > I haven't seen a mail from suger-devel in spam folder since Nov 4.
> > Looks like you fixed it! I have no experience on DMARC.
>
> I reviewed the DMARC documentation and it seems useful. It builds on top
> of SPF and DKIM, with additional information on how to handle delivery
> for mail that fails the checks.
>
> Since lots of people use their @sugarlabs.org aliases without passing
> through our SMTP server, our DMARC policy *must* *not* tell other sites
> to reject unsigned mail. Also, there are various quirks regarding email
> forwarded by mailing list managers (the From address remains the same,
> but the sending domain may actually be different).
>
> So if someone wants to experiment with DMARC that's great, but be
> extremely careful about handling these corner cases correctly or we'll
> loose users emails.
>
> --
>  _ // Bernie Innocenti
>  \X/  http://codewiz.org
>
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