Perfect!!!
Now I understand and I'll to start DMARC implementation with p=none to see
what happen.
Regards !!!
El mié., 18 dic. 2019 a las 7:22, Gregory Heytings (<g...@sdf.org>) escribió:
>
> Hi,
>
> I'd second Viktor Dukhovni's opinion. For the vast majority of mail
> servers, a minimalistic DMARC policy suffices, just add the following
> record in the domain's DNS root zone:
>
> _dmarc 10800 IN TXT "v=DMARC1; p=none;"
>
> If you want to go a step further, you can just monitor how DMARC is
> applied by receiving mail servers to mails that (pretend to) come from
> your domain. Just add a "rua" ("reporting aggregate reports") entry:
>
> _dmarc 10800 IN TXT "v=DMARC1; p=none; rua=mailto:
> postmas...@yourdomain.com"
>
> You'll then start receiving a daily report from the mail servers that
> implement DMARC reporting *and* that received at least one mail coming
> from (or pretending to come from) your domain. In most cases you'll only
> receive reports from Google and Yahoo. These reports are XML files, which
> are difficult to read, so you should find a tool that helps you to make
> sense of them.
>
> The possible next steps are to use "p=quarantine", which basically means
> "deliver the mail but flag it as spam", and "p=reject", which means what
> it means: do not accept the email. But as Viktor said these policies are
> not recommended for a domain which does not handle sensitive information
> (bank, government, hospital, ...).
>
> Gregory
>
