The experts are wrong. You can run a mailserver from a dynamic IP. I'm doing it.
Over 10yrs ago I built a self-hosted mailserver on Windows7 using hMailServer, MXGuardDog, FreeDNS and other 3rd party services and apps.
In 2023, I migrated all of my servers to Ubuntu and recreated my mailserver using all FOSS, DynDNS, and SMTP Relay through Brevo.
Using DynDNS and Brevo's SMTP Relay with DKIM, SPF and DMARC, my mailserver is scoring 9.3/10 for spam protection from a dynamic residential IP address on a completely self-hosted 4-node LAN with SSL, reverse proxy, mailserver, and 2 webservers -- all running Apache LAMP stacks.
Ask me how I did it. Would love to share!
u/Cyberbird85 — 23 hours ago