There’s also the whole that even if you get everything working successfully that when you send mail it ends up in recipients junk mail folders because Google/Microsoft/other big email providers are marking your domain as spam since it’s new and unrecognized.
slazer2au@lemmy.world 2 days ago
Not just your domain because it’s newly registered. Your ISPs entire residential IP block because someone 15 years ago was infected with malware that sent gmail/hotmail some spam. It doesn’t mater how much SPF, DKIM, and DMARC you set up, your still blocked.
redsand@infosec.pub 2 days ago
And this is the bottom of the rabbit hole that we all go down learning it’s probably not worth it even in a corporate environment much less homelab.