Postfix, Dovecot and Anti-Spam Measures
summary
A hands-on report about operating a home mail server stack since 2004 using Postfix, Dovecot and Amavis/SpamAssassin/ClamAV for IMAP-only access, TLS transport, LMTP delivery and virtual users without a SQL backend. It describes an active-active Dovecot cluster over DSL (required a Dovecot 2.2.15 bugfix) and shares practical wins and mistakes—such as an overstrict reject_unverified_sender rule, a 1024-bit self-signed certificate that expired in 2014, and fixes applied only after failures—plus diagnostics and tools used (OpenSSL, MXToolbox, header inspection, mbox extraction).
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chapters (13)
- 0:00Introduction
- 2:01Independence and security
- 10:5710 years private mail server
- 13:25Operational mistakes
- 17:50Certificate and encryption setup
- 21:17DNS and spam prevention
- 22:42Server spam filters and scanners
- 29:06IMAP and SMTP config
- 33:25Certificate auth and cluster
- 37:20Summary and OS experience
- 46:18User management and delivery
- 48:57Dovecot vs Courier
- 51:04Mail security and trust
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