How we've hosted our email "the hard way", by registering our own IPv4 block allocation with RIPE and then going through everything involved in receiving, delivering and accessing email on the modern public Internet. anil.recoil.org/notes/recoil... with @nick.recoil.org and @gazagnaire.org
How we refreshed self-hosted Recoil email with our own RIPE-allocated IPv4 block, and deployed Postfix/rspamd/Dovecot to get full SPF/DKIM/DMARC deliverability.
