[dmarc-discuss] DMARC thwarted already?

Murray S. Kucherawy superuser at gmail.com
Thu Jun 5 16:03:17 PDT 2014


On Thu, Jun 5, 2014 at 1:11 PM, Peter Blair via dmarc-discuss <
dmarc-discuss at dmarc.org> wrote:

>
> > I'd be curious about that "left off the domain" one; if an ISP were
> already
> > rejecting mail from domains that don't resolve, I doubt it would have
> been
> > delivered.
>
> +1 (again).
>
> It's a fairly prudent measure, rejecting mail with an invalid RHS with a
> 4XX series post-DATA reply.
>

Do you mean 5xx?  A syntactically invalid RHS doesn't seem to be something
that would be corrected by a retry later.

-MSK
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://dmarc.org/pipermail/dmarc-discuss/attachments/20140605/79dc3ed3/attachment-0001.html>


More information about the dmarc-discuss mailing list