How to Create DNS Records at Cloudflare
In my mail server tutorials, I recommend running mail server on ScalaHosting VPS, because their IP addresses are not on…
How to Install Webmin on CentOS 8/RHEL 8 Server
Webmin is a free and open-source control panel for administering Unix/Linux servers. This tutorial will be showing you how to…
How to Install Webmin on Ubuntu 20.04 Server
Webmin is a free and open-source control panel for administering Unix/Linux servers. This tutorial will be showing you how to…
How to Fix “can’t read superblock” Error on Linux (ext4 & Btrfs)
Recently my Linux desktop computer can’t mount my 5TB external hard disk drive (HDD), and the file manager displays the…
How to Create a Linux VPS Server on ScalaHosting
ScalaHosting is my recommended VPS (Virtual Private Server) provider for running email servers. This article is going to explain how…
How to Secure Email Server Against Hacking with VPN (CentOS/RHEL)
In this tutorial, I’m going to share with you my tips and tricks to secure CentOS/RHEL email servers against hacking…
Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server
This tutorial will show you how to set up SSH two-factor authentication on CentOS/RHEL server using the well-known Google Authenticator.…
2 Simple Steps to Set Up SSH Public Key Authentication on CentOS
This tutorial explains how to set up SSH public key authentication on a CentOS/RHEL desktop. There’re basically two ways of…
How to Secure Email Server Against Hacking with VPN (Debian/Ubuntu)
In this tutorial, I’m going to share with you my tips and tricks to secure email servers against hacking with…
How to Set Up ModSecurity with Nginx on Debian/Ubuntu
This tutorial is going to show you how to install and use ModSecurity with Nginx on Debian/Ubuntu servers. ModSecurity is…
How to Set Up ModSecurity with Apache on Debian/Ubuntu
This tutorial is going to show you how to install and use ModSecurity with Apache on Debian/Ubuntu servers. ModSecurity is…
How to Install EteSync 2.0 (Etebase) Server on Ubuntu
This tutorial is going to show you how to install EteSync server on Ubuntu. EteSync is an open-source, end-to-end encryption…
How To Install and Use ProtonVPN on Desktop Linux
ProtonVPN is a VPN service provider based in Switzerland. In this article, I’m going to show you how to use…
3 Ways to Install Skype on Ubuntu 22.04/20.04 Desktop
This tutorial is going to show you 3 ways to install Skype on Ubuntu 22.04/20.04 desktop: install Skype from the…
Set Up ParseDMARC on Ubuntu 20.04 to Analyze DMARC Reports
ParseDMARC is an open-source, self-hosted DMARC report analyzer. For those who don’t know, DMARC is an email security standard that…
Install Akaunting Self-Hosted Accounting Software on Ubuntu 20.04
This tutorial will be showing you how to install Akaunting on Ubuntu 20.04 with Apache or Nginx web server. Akaunting…
Setting Up Amavis and ClamAV on CentOS 8/RHEL 8 Mail Server
This is part 10 in the CentOS 8/RHEL 8 mail server from scratch tutorial series. In this article, I will…
Set Up BIND Authoritative DNS Server on CentOS 8/RHEL 8
This tutorial will be showing you how to set up and run your own authoritative name server on CentOS 8/RHEL…
Set Up SMTP Relay Between 2 Postfix SMTP Servers on CentOS/RHEL
Previously we discussed setting up Postfix SMTP relay with mailjet, which is useful when you have to use a commercial…
How to Configure User Quota in Dovecot & PostfixAdmin
This tutorial is going to show you how to configure user quota in Dovecot and PostfixAdmin. Prerequisites To follow this…
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