https://blogs.damiendye.uk/en/tags/dovecot/ Recent content in Dovecot on Damien Dye's Blog Hugo en-GB Thu, 22 Oct 2026 18:50:00 +0100 https://blogs.damiendye.uk/en/email/postfix-dane-done-properly/ Thu, 22 Oct 2026 18:50:00 +0100 https://blogs.damiendye.uk/en/email/postfix-dane-done-properly/ A Postfix 3.10 build that refuses plaintext both ways, uses DANE or MTA-STS on every outbound hop, relays only for a login, ties each login to its own address in envelope and From header, drops unknown sender domains, and rejects SPF and DKIM failures in Rspamd. Every reply captured over IPv4 and IPv6, with the traps.