== HOW TO SET UP ON THE DECENTRALISED FEDERATED SERVICE "E-MAIL" IN 2023 ==

1. your problem is Google, MS and Yahoo.
2. SMTP over SSL *only*.
3. SPF, DMARC, DKIM
4. they don't like your IP or your face or can't be bothered or something and you have weeks of supplication hoping there's a human there
5. give up and outsource it

as a sysadmin, I always advise going straight to step 5

anyone using "e-mail" as an example of a successfully decentralised federated service in 2023 does not know what they're talking about and should be ignored

stop doing this

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EDIT: if you're a fatuous dipshit, read the replies before you answer. or better, don't.