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Showing posts from October, 2025

How to Get Into Cybersecurity With No Experience and Land a Job in 6 Months (Free Roadmap + Certificates)

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  How Anyone Can Get Into Cybersecurity With No Technical Background and Land a Job in 6 Months (Free Step-by-Step Guide) Cybersecurity is one of the few high-demand careers that doesn’t require a degree, coding skills, or a tech background to get started. With the right roadmap and consistency, you can go from complete beginner to employable in 6 months — even on a small or zero budget. In this guide, you’ll learn practical steps , free resources , hands-on labs , and cheap certifications you can take today to start your cybersecurity career. Why Cybersecurity Is Beginner-Friendly (Even With No Tech Experience) Cybersecurity is more about: Curiosity Logical thinking Problem-solving Understanding how systems behave Many successful cybersecurity analysts started in: Sales Teaching Customer service Banking Retail What matters most is skill , not background. And the entry-level tools are easy to learn with free training. 6-Month Roadmap to Star...

How to Install Zimbra Mail Server the correct way

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  Prerequisites  OS: Ubuntu 22.04 LTS (64-bit) RAM: 8 GB+ recommended. CPU: 4 cores+. Storage space  – 50 GB+ Hostname: must resolve properly (ex: mail.example.com ) Ports open: 25, 80, 443, 7071, 465, 587 DNS Setup You need to create few records for domain to get started. They are as follows. Type Host Value A @ Your IP address A mail Your IP address MX @ mail.yourdomain.com 10 TXT @ v=spf1 a mx ip4:138.68.14.182 ~all TXT _dmarc v=DMARC1; p=quarantine; rua=mailto:admin@cybertech-arena.com; ruf=mailto:admin@cybertech-arena.com; fo=1 Auto Wait 5-15 minutes for propagation. Set Hostname and Hosts File on VPS SSH into your Contabo VPS: ssh root@your_vps_ip Set the hostname: hostnamectl set-hostname mail.yourdomain.com Replace mail.yourdomain.com  with your domain. Edit /etc/hosts : nano /etc/hosts Add your VPS IP and hostname: 123.45.67.89 mail.yourdomain.com mail Save (CTRL+O → ENTER → CTRL+X). Test: hostname -f Should print: mail.yourdomain.com Install Sy...