Set up DMARC (verification) for Postfix on Ubuntu
Last week I wrote a post about how to set up SPF and DKIM for Postfix on Ubuntu, today I…
Set up Ubuntu’s Built-In Firewall
Ubuntu’s built-in firewall is named ufw (uncomplicated firewall). Actually Ufw is just an utility which makes it easier to configure…
Set up ownCloud on Ubuntu
Today I wanna show how to set up ownCloud (release 10.11) on Ubuntu 22.04.1 LTS. ownCloud is an open-source file sync,…
Set up SSH private/public Key Pair without using Password Authentication on Linux
SSH keys are not only more convenient but also improve the security in contrast to the password authentication, provided the…
Set up SPF and DKIM for Postfix on Ubuntu
In this post I want to show how to set up the SPF (Sender Policy Framework) and DomainKeys Identified Mail (DKIM)…
Enable TLS for Postfix on Ubuntu
Regarding the Postfix documentation, TLS support is turned off by default, so you can start using Postfix as soon as…
MySQL – Access denied for user ‘root’@’localhost’
In case you want to connect to your local MySQL Database by using the root user and you encounter one…
Linux Hard Link vs. Soft Link (Symlink, Symbolic Link)
In order to understand the differences between a hard link and soft link in linux or in general Unix-like operating…
Install Ubuntu as Hyper-V Generation 2 Virtual Machine
In order to install Ubuntu as a Generation 2 Hyper-V virtual machine, you have to switch the Secure Boot Template…
Set up a SFTP Chroot Jail on Ubuntu
If you want to lock user’s they want to upload, download and edit files from a web root directory, so…
