> It depends on whether your IP address has good reputation or not
Addressed in another comment "I wouldn't try it from a residential IP but as long as you run a blacklist check on the IP before you start".
> Don't act like we're idiots, we know what SPF, DKIM and DMARC are.
If you read one comment higher in the thread instead of reacting emotionally, I was specifically asked to elaborate on what the correct DNS meant. Please don't act like those who don't know are idiots.
> We've seen perfect e-mails (rated 100/100 by deliverability services) get rejected by Microsoft because reasons.
No, you haven't.
> You were lucky, congratulations.
What do you call consistent luck? In my case 14 years across 6 different sending domains, 4 different servers with four different hosts using two different MTAs?