How I Recovered My Server After Accidentally Deleting the Wrong Directory
Let me tell you about the day I almost broke everything. I was logged into my production server. I wanted to clean up a...
Managing Users and Permissions on Linux the Right Way
I used to treat Linux permissions like an annoying warning I had to get around. “Oh, permission denied? Just slap a chmod 777 on...
Locking Down Nginx: How I Hardened My Web Server Configuration
I still remember the first time I deployed a production app using Nginx. Everything looked perfect on the surface — fast responses, clean logs,...
Securing Your Linux Server with UFW: My Go-To Firewall Setup
When I first got serious about running my own Linux server, I made a checklist of the basics:✅ Secure SSH,✅ Keep everything updated,❌ …but...
How to Configure Multi-Domain Support on a Mail Server (Ubuntu 20.04 + Postfix + Dovecot)
Welcome to Part 5 of our Mail Server Series on Ubuntu 20.04.In Part 1, we built the SMTP server using Postfix.In Part 2, we...
How to Create a DMARC Record to Protect Your Mail Server’s Reputation
Welcome to Part 4 of our mail server tutorial series on Ubuntu 20.04. Before diving into DMARC, make sure you’ve followed the previous steps:✅...
How to Set Up SPF and DKIM on a Mail Server in Ubuntu 20.04
This is Part 3 of the tutorial series on building a mail server on Ubuntu 20.04. In Part One, we installed Postfix as the...
How to Install Dovecot IMAP Server and Enable TLS Encryption on Ubuntu 20.04
This is Part 2 of the tutorial on how to build a mail server on Ubuntu 20.04. In Part One, we installed Postfix as...
How to Set Up a Secure Mail Server with Postfix on Ubuntu 20.04 (Complete with Real Config Examples)
Setting up a mail server can be more challenging compared to other types of servers. That’s because a mail server involves many components that...