In Postfix configuration, particularly on Debian and Ubuntu systems, you might come across terms like "submission" and "submissions" when looking…

pSome internet access providers have port 25 disabled in their routers to prevent spam. If you run your own email…

The world of Linux is diverse, Linux distributions using different package management systems. RPM (Red Hat Package Manager) and Debian's…

The Nginx web server has a max. body size limit of 1 MB for requests as default. This might be…

Winmail.dat files are a unique file format utilized primarily by Microsoft Outlook. These files serve as containers for attachments sent…

The bash history is a log file that contains all commands that a user executed on the Linux BASH shell.…

NFS (Network File System) is a distributed file system protocol developed by Sun Microsystems to share files and folders between…

If you run a firewall on your Linux server and want to use passive FTP connections, you have to define…

You might have noticed that Ubuntu has since version Ubuntu 22.04 started to show the following message when you install…

In this guide, I will show you how to find your IP address (private IP address and public IP address)…