Am 12.12.2016 um 08:52 schrieb Povl Hessellund Pedersen via dmarc-discuss:
> ...need some 3rd party system to send e-mail. Some of these companies, even
> best of breed in their specific area, does not know anything about e-mail,
> RFC etc.
Yep, it amazes me sometimes. Well, a lot of times. - Actually, almost
always. Only a few exceptions of senders that know what they are doing.
> So we tell the business unit
> we are 40.000+ employees
If you are lucky to find a responsible person in an organization of this
size. But I try to avoid talking tech with business. Gmail's "?"
question mark for unauthenticated email helps with the convincing
("Nobody is going to click on that...").
[https://support.google.com/mail/answer/180707?co=GENIE.Platform%3DDesktop&hl=en&oco=0]
> to use a subdomain and a reply-to on our primary domain. Then we try to get
> the supplier to help with either SPF (if we are lucky, or tries hard enough)
> or DKIM (impossible).
Some of those senders are really slow to catch on and sometimes try to
charge it as "one-off" project. I started telling them to make
themselves look pretty on [this list](http://dmarc.io/sources/) if they
want us to consider them when it's time to renew contracts. In the
meantime they need to step aside onto a sub-domain.
> We are not alone here. We have all sorts of systems like newsletters (they do
> DKIM etc), HR system, time registration system, other misc systems. Maybe it
> is 10 subdomains only, and maybe we should just create DMARC record for all
> of them with p=none - and not depend on sp=none.
Yes, I would recommend the individual policies for dedicated sub-domains.
Simon
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