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Protecting Your Brand’s Email Reputation: Why Your Business Needs DMARC

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  Video: https://www.youtube.com/@ulycomm Email remains the primary driver for business communication, customer engagement, and transaction security. However, as cyber threats grow increasingly sophisticated, spoofing and phishing attacks continue to target company domain names to deceive clients and steal critical data. To safeguard your brand and ensure high email deliverability, DMARC (Domain-based Message Authentication, Reporting, and Conformance) has become an industry essential. What is a DMARC Record? A DMARC record is a standard DNS text entry that tells receiving mail servers (like Google Workspace, Microsoft 365, or Yahoo Mail) how to evaluate emails sent from your domain. It builds upon two existing security frameworks: SPF (Sender Policy Framework): Specifies which server IP addresses are authorized to send email on behalf of your domain. DKIM (DomainKeys Identified Mail): Adds a cryptographic signature to verify that the message content was not altered in ...
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Setup to enable HTTPS with Let’s Encrypt SSL certificates on Nginx (frontend), while Apache remains the backend.

 Assuming you've completed this guide: https://uistv-tech.blogspot.com/2025/08/guide-nginx-as-frontend-apache2-as.html  This way: Clients connect securely to Nginx (443, HTTPS) Nginx proxies requests to Apache (8080, HTTP) 🔐 SSL Setup with Nginx + Apache Backend on Debian LXDE 1. Install Certbot (Let’s Encrypt Client) On Debian: sudo apt install certbot python3-certbot-nginx -y 2. Ensure Your Domain Points to Your Server Let’s Encrypt requires a valid domain. Update your DNS A record so your domain (e.g., example.com ) points to your server’s public IP. Test with: ping example.com It should resolve to your server IP. 3. Update Nginx Config for Your Domain Edit your proxy config: sudo nano /etc/nginx/sites-available/apache-proxy Change it to: server { listen 80 ; server_name example.com www.example.com; location / { proxy_pass http://127.0.0.1:8080; proxy_set_header Host $host ; proxy_set_header X-R...
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Guide: Nginx as Frontend, Apache2 as Backend on Debian LXDE

1. Update Your System Open your terminal and update packages: sudo apt update && sudo apt upgrade -y 2. Install Apache2 Apache will act as the backend server that actually serves the content. sudo apt install apache2 -y Verify Apache is running: systemctl status apache2 If it’s not running, start and enable it: sudo systemctl start apache2 sudo systemctl enable apache2 Test: Open your browser and go to 👉 http://localhost You should see the Apache default page. 3. Change Apache Listening Port Since Nginx will listen on port 80 , Apache must use a different port (e.g., 8080 ). Edit the ports configuration: sudo nano /etc/apache2/ports.conf Change: Listen 80 to: Listen 8080 Then edit the default Apache site config: sudo nano /etc/apache2/sites-available/000-default.conf Find the line: < VirtualHost * :80 > Change it to: < VirtualHost * :8080 > Save and restart Apache: sudo systemctl restart apache2 Test backend: 👉 Open http://l...
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Realtek Wireless LAN

 Realtek 8188GU Wireless LAN
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HP T510 Thin Client Info

  Network Adapter:  Broadcom 5718 Ethernet Controller
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