A brutally honest, comprehensive guide to running your own mail server — covering the Postfix+Dovecot+Rspamd classic stack, the modern Stalwart all-in-one, DNS authentication records, and the deliverability reality that makes getting into Gmail's inbox the hardest part of the whole endeavor.
Dovecot
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Self-Hosting Your Email: Postfix, Dovecot, Stalwart, and the Deliverability Gauntlet