Proper Way to Configure a Domain which never sends emails

[Ignacio García]

El 20/08/2019 a las 2:20, Kevin Darcy escribió:
> DNSBL is by IP, true, but there are other forms of "SMTP blacklist" 
> that are by domain. Getting one's domain on one or more of those lists 
> would help avoid the impact of someone trying to use the domain to 
> spoof malicious email. Sure, you could wait until *after* the damage 
> is done, and then the domain might end up on one or more blacklists, 
> but I was just musing, half humorously, on whether one could be 
> proactive, by volunteering to be on the list(s).

Yes, that would be an original way to solve it :)

> The OP specifically said he wanted to *receive* mail, so I don't 
> understand why people keep recommending a null MX.

Yes. Null MX wouldn't help for this specific case.

> I've concurred that a "-all" SPF will help.

Well, thank you all so much for your kind support.

Ignacio