Linux Postfix Mail Server
📧 Linux Postfix Mail Server Setup | Linux Level-2 Series | Lab 14
Welcome to Lab 14 of the Linux Level-2 Series! In this hands-on lab, you’ll learn how to set up a complete mail server using Postfix (MTA) and Dovecot (IMAP/POP3)—a foundational skill for managing email services in Linux environments.
The xFusionCorp team is deploying a centralized mail server in Stork DC, and your task is to configure email delivery and mailbox access for users.
📌 Lab Objective:
Install and configure Postfix and Dovecot, and create a working email account.
🛠️ Task Requirements:
Install and configure Postfix
Create user: [email protected]
Password: YchZHRcLkL
Mail directory: /home/kareem/Maildir
Install and configure Dovecot
💻 Step-by-Step Commands:
🔹 1. Install Required Packages
sudo yum install -y postfix dovecot
or (Ubuntu/Debian):
sudo apt update
sudo apt install -y postfix dovecot-imapd dovecot-pop3d
🔹 2. Configure Postfix
sudo vi /etc/postfix/main.cf
🔧 Update/Add:
myhostname = stmail01.stratos.xfusioncorp.com
mydomain = stratos.xfusioncorp.com
myorigin = $mydomain
home_mailbox = Maildir/
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
sudo systemctl enable postfix
sudo systemctl start postfix
🔹 3. Create User and Mail Directory
sudo useradd kareem
echo "kareem:YchZHRcLkL" | sudo chpasswd
Create Maildir
sudo mkdir -p /home/kareem/Maildir
sudo chown -R kareem:kareem /home/kareem/Maildir
🔹 4. Configure Dovecot
sudo vi /etc/dovecot/conf.d/10-mail.conf
🔧 Update:
mail_location = maildir:~/Maildir
sudo vi /etc/dovecot/conf.d/10-auth.conf
🔧 Ensure:
disable_plaintext_auth = no
auth_mechanisms = plain login
sudo systemctl enable dovecot
sudo systemctl start dovecot
🔍 Verify Services:
systemctl status postfix
systemctl status dovecot
✅ Expected Outcome:
Postfix installed and running
Dovecot installed and running
User kareem created with Maildir
Mail services ready for sending/receiving emails
📚 What You’ll Learn in This Video:
Installing and configuring Postfix (MTA)
Setting up Dovecot for mailbox access
Creating Linux users for email accounts
Maildir structure and configuration
Managing mail services in Linux
Real-world DevOps mail server setup
🌟 Why This Lab Matters:
Email servers are critical for communication in enterprise environments. Understanding how to configure Postfix and Dovecot gives you strong fundamentals in Linux system administration and infrastructure services.
🎯 Series: Linux Level-2
Master Linux with practical labs covering networking, services, automation, and security.
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