14.Linux Postfix Mail Server

This lab guide walks through installing and configuring Postfix as an MTA and Dovecot as an IMAP/POP3 server on a CentOS/RHEL-based mail server. It covers creating a user email account, setting up Maildir-format mail storage, and verifying both services are running. A beginner-friendly explanation of the email flow architecture (Postfix → Maildir → Dovecot) is also provided.