Securing Your ISPConfig 3 Mailserver on Ubuntu 24.04 / Debian 12 - Docker, Ansible - NETCLIOUD24.COM
In this video, you'll learn how to secure your ISPConfig 3 managed mailserver on Ubuntu 24.04 or Debian 12 using a free SSL certificate from Let’s Encrypt. We'll walk you through three deployment methods: manual setup, Docker-based installation, and Ansible automation.
What You’ll Learn in This Video:
Prerequisites:
ISPConfig 3 mailserver running on Ubuntu or Debian
Fully Qualified Domain Name (FQDN) (e.g., mx1.example.com)
Root or sudo access
Open ports: 80, 443, 25, 587, 143, 993
DNS A and MX records pointing to the server’s public IP
(Read full guide)
Step 1: Manual Setup with Certbot
Update packages and install Certbot
Generate Let’s Encrypt certificate
Configure Postfix and Dovecot for SSL/TLS
Test using openssl s_client and verify auto-renewal
Step 2: Docker-Based Deployment
Run a Certbot container to issue certificates
Copy certificate files to Postfix/Dovecot directories
Set proper permissions (root, chmod 600)
Step 3: Ansible Automation
Automate installation, service configuration, and certificate renewal using Ansible
Also Featuring: Netcloud24’s Windows VPS Hosting
Thinking about expanding your infrastructure? Check out Netcloud24’s Windows VPS solutions—perfect for remote desktop use, business applications, and secure environments. They offer:
High-performance Windows VPS with RDS CAL licenses included
Flexible plans with 4–64 GB RAM, NVMe SSD storage, and instant setup
24/7 expert support, automated backups (up to 7 days), VPN & firewall options, and compliance with GDPR and other standards
Why You Should Watch This Video:
Encrypt SMTP/IMAP/POP3 traffic using Let's Encrypt SSLs
Choose between manual, Docker, or automated Ansible deployments
Follow real-world, production-ready configuration steps
Learn scalable solutions for both Linux mail servers and Windows VPS hosting
Full Tutorial Link Below:
https://netcloud24.com/store/knowledg...
Topics Covered:
– Manual SSL issuance with Certbot
– Docker-based SSL setup
– SSL automation using Ansible
– Bonus: Windows VPS hosting promo from Netcloud24
#ISPConfig3 #LetsEncrypt #Ubuntu2404 #Debian12 #Mailserver #SSL #Docker #Ansible #WindowsVPS #Netcloud24
#ISPConfig3 #LetsEncrypt #Ubuntu2404 #Debian12 #Mailserver #SSL #Docker #Ansible #WindowsVPS #Netcloud24