Things that really DO matter for mailings. To be researched & continued...
Sources
- https://shape.host/resources/setting-up-dkim-domainkeys-with-postfix-on-ubuntu-20-04-lts
- https://easydmarc.com/tools/dkim-record-generator
- https://support.easydmarc.com/knowledge-base/setup-dns-hetzner
- https://www.linuxbabe.com/mail-server/setting-up-dkim-and-spf
- https://docs.hetzner.com/konsoleh/account-management/email/mailsecurity
- https://www.kavalier.tv/blog/send-e-mail-from-gmail-with-your-personal-domain-without-g-suite#:~:text=(On%20Hetzner%20you%20simply%20go,%2F%20DMARC%20and%20activate%20DKIM.)