Tips and Tricks
How to reject mail for unknown users in postfix (local_recipient_maps)
How to reject mail for unknown users on localhost with Postfix with local_recipient_maps with example
How to restrict IP Address to use postfix smtp relay
How can I restrict my postfix smtp relay server to be used by only certain IP Address, How to block or allow postfix relay access using mynetworks example
3 easy steps to configure gmail smtp relay with postfix
Step by step tutorial to configure postfix using third party gmail smtp relay to send mails to external network. Use SASL with Google 2-Step Authentication
10 practical examples of tmux configuration with examples
In this tutorial I will use tmux.conf and show different examples to modify your tmux configuration such as define custom prefix key etc
Complete tutorial on tmux commands with examples from scratch
In this tutorial I will cover the basics of tmux from scratch using various tmux commands to create session, windows, splitting panes, killing session etc