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1. mail-server-guide.md mail-server-guide.md

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   # Mail Server Setup Guide

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   Complete guide for setting up a mail server with Postfix (SMTP), Dovecot (IMAP), OpenDKIM (DKIM signing), and Nginx on Ubuntu 24.04 LTS with Maildir delivery. Nginx is included as it is required by certbot for TLS certificate issuance and renewal via the HTTP challenge.

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2. ttypo ttypo Public

   Terminal-based typing test.

   Rust 1