Relaying to Gmail via smtp.gmail.com can be accomplished by configuring your Postfix with SASL authentication and TLS encryption. The common errors you will encounter if sending from your postfix mail server failing to gmail.com domain but works in other domains...
There is some instance during the Linux installation that you did not bother to set the correct timezone for any reasons like sometimes you are just lazy to set it, you’re in a rush to finish what your boss want...
Secure Shell (SSH) is a program used to secure communication between two entities, often used as a replacement for Telnet and the Berkeley protocols such as remote shell (RSH) and remote login (Rlogin). SSH is also used as a secure...
Processes and Jobs A process is an executing program identified by a unique PID (process identifier). To see information about your processes, with their associated PID and status, type % ps A process may be in the foreground, in the...
File system security (access rights) In yourhomedirectory, type % ls -l (l for long listing!) You will see that you now get lots of details about the contents of your directory, similar to the example below. Each file (and directory)...