Reading a file line by line is a common task in many shell scripts, as it allows you to process…
When you add an SPF record to your domain, it helps indicate whether your email is being spoofed or not.…
In Python, you can use the `print()` function to print output to the console. By default, the `print()` function adds…
In Python, a variable is a named location in memory where you can store and access data. Variables are used…
If you’re managing a Linux server, you may be wondering how to configure Postfix to send emails from external SMTP…
Postfix SASL Authentication is one of the most popular methods for remote SMTP authentication. It’s a secure, reliable, and highly…
Have you ever wished you could relay outgoing emails based on the sender’s address? Well, now you can! With the…
The ‘find’ command with -maxdepth is a powerful tool in the Linux operating system. It is used to recursively search…
Docker is an open-source platform that enables developers to create, deploy, and manage applications in a lightweight, secure, and efficient…
DKIM or DomainKeys Identified Mail is an authentication protocol used to validate the identity of a sender. It’s an important…