DKIM (and SPF--and DMARC, oh my!)

Matt Minuti matt.minuti at gmail.com
Fri Jul 31 10:27:52 EDT 2015


On Fri, Jul 31, 2015 at 2:47 AM, Joshua Judson Rosen <rozzin at hackerposse.com
> wrote:

> On 07/29/2015 03:22 PM, Greg Rundlett (freephile) wrote:
> > Thanks Joshua, now I know a lot more about DKIM!
> >
> > (Let's not do what Yahoo! did.)
> >
> > And by the sounds of it, we really don't have to do anything.
>
> We may need to stop adding the GNHLUG list *footer* to messages,
> since we apparently get messages with DKIM signatures over the body
> (I'll miss it, but I suspect that the only people who actually
>  read it are the people who don't need it...).
>

Aw, I always thought it was convenient when mailing lists had footers on
their messages.


>
> And if we get messages from any domains using DMARC + SPF,
> then we probably need to do something more drastic.
>
> If we upgrade to mailman 2.1.18 (which is in the latest
> Debian release, BTW), that includes includes a
> "dmarc_moderation_action" option that can basically
> handle all of the ugly DMARC cases in however ugly
> a way is necessary while letting the rest of the mail
> pass through as unscathed as possible.
>
>
In that case, I vote for
# apt-get update && apt-get install mailman
:)


> --
> "Don't be afraid to ask (λf.((λx.xx) (λr.f(rr))))."
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