This step‑by‑step guide shows how to set up a fully functional, self‑hosted mail system on CentOS 7 using Postfix, Dovecot, MariaDB, OpenDKIM and Roundcube Webmail, covering software installation, database schema, service configuration, DNS records, TLS/SSL, firewall rules and testing procedures.
This guide reviews six popular open‑source mail servers for Linux—Postfix, Exim, Dovecot, OpenSMTPD, Mailcow, and iRedMail—detailing their features, advantages, installation commands, and a comparative table to help you select the most suitable solution for stability, security, and ease of deployment.
This tutorial explains how to set up DNS records, install Postfix and Cyrus‑SASL, configure authentication, create necessary configuration files, add users, and test SMTP on an Ubuntu server to reliably send emails without landing in spam folders.
After years of using third‑party email services, the author shares a detailed, hands‑on account of configuring a self‑hosted mail system—including the essential components (MUA, MTA, MDA, MRA) and the full SMTP/IMAP/POP3 workflow—so readers can replicate a stable, private email server.
This guide explains how email systems work—from DNS MX record lookup and server roles like MUA, MTA, MDA, and MRA to the detailed steps of sending, receiving, authentication, encryption, and spam filtering—providing operations engineers with a comprehensive understanding of mail infrastructure.
This comprehensive guide explains the architecture and workflow of email systems, covering DNS MX record lookup, the roles of MUA, MTA, MDA, MRA, authentication mechanisms, encryption, and spam/virus filtering, providing operators with essential knowledge to manage and secure mail services.
