550 requested action not taken: possible solutions
SMTP error 550: how to fix “Requested action not taken: mailbox unavailable” and other SMTP 550 error messages
  • Technical matters

If you want to send a message with your e-mail client and the sending fails, you’ll receive a corresponding error message from the server, including an SMTP status code. For example, the message “550 Requested action not taken: mailbox unavailable” means that the targeted address couldn’t be reached. Since this problem can have various causes, even more possible solutions exist, some of which you...

SMTP error 550: how to fix “Requested action not taken: mailbox unavailable” and other SMTP 550 error messages
Create your own visitor counter: How it works
Visitor counter: Create a counter for your website
  • Website creation

At the start of the internet, a visitor counter on a website was a classic marketing instrument that significantly helped the success of a web presence. Today, the practical scripts are primarily used for presenting click numbers on specific content, such as videos or blog entries, as well as for collecting basic user data for web analysis. If you don’t want to rely on free or paid downloads, or...

Visitor counter: Create a counter for your website
HTTP 408: How to fix the “Request Timeout” error
HTTP 408: how to fix the timeout error
  • Technical matters

Permanent availability is one of the most important things when it comes to a website. However, even the best technical conditions do not offer a 100% guarantee that a website will constantly run smoothly. Connection errors like HTTP error 408 regularly present websites with minor and major difficulties, especially since the causes are often found on the client side. Our guide looks at the causes...

HTTP 408: how to fix the timeout error
How are websites accessed?
How are websites accessed?
  • Web development

In order to access a web page in a browser, you just have to enter the URL into the address bar in your web browser and the requested website will pop up on your screen. This seems simple enough, but the process that’s taking place in the background is a highly complex one. Learn about what happens when you access a website – from the URL translation to the relevant IP address via data transfer,...

How are websites accessed?
What is e-business?
E-business
  • Online sales

The term e-business, or electronic business, has been on the tip of everyone’s tongues for some time in online spheres. But what exactly does it mean? It is all too often used interchangeably with “e-commerce,” but this is just one part of e-business. In fact, the term encompasses the net economy’s full range of possibilities for supporting and optimizing business processes with digital...

E-business
An introduction to clickbait
What is clickbait?
  • Online sales

‘What you’re about to read in this article has never been discussed before!’ This may not be entirely true, because the topic of clickbaiting is already commonplace in the world of social media. But by using sensational titles and descriptions like we just did, marketers and publishers aim to generate clicks to boost their ad revenue. And for the most part, it works. So how is this tactic so...

What is clickbait?
Patreon
Artists and Patreon: The Path to Financial Independence?
  • Online sales

Jack Conte and Sam Yam founded the crowd-funding platform Patreon because Conte, a musician, could no longer accept that he earned so little on YouTube. This was in spite of the fact that he had a few million subscribers. Nowadays, Patreon is a reliable income source for many creatives. However, not every user benefits from the business model, which requires expertise and certain qualifications.

Artists and Patreon: The Path to Financial Independence?
Databases
Databases – why do you need them and what kinds are there?
  • Technical matters

Databases are a fundamental part of our information society today. They organize electronic data and regulate access to it. Databases have a wide range of applications, both commercial and private. Each database system has a database management system based on a specific database model. While the history of the database began with the hierarchical model, today the relational database model is the...

Databases – why do you need them and what kinds are there?
Set up ownCloud with Raspberry Pi
Creating a Raspberry Pi cloud server with owncloud
  • Configuration

With ownCloud software, your Raspberry Pi can be used as a private cloud, performing the same kind of tasks as clouds from major providers such as Google, Amazon, and Dropbox. Cost-effectiveness is just one of many the benefits of creating your own personal cloud; another is the privacy and security of your data. This step-by-step Raspberry Pi cloud tutorial explains how to set up ownCloud.

Creating a Raspberry Pi cloud server with owncloud
CSMA/CD - Carrier Sense Multiple Access / Collision Detection
CSMA/CD: Explanation of the process
  • Know-how

Rules must be observed when communicating in a group. This is no different with local networks: CSMA/CD regulates how data packet collisions must be handled in a LAN network. But what happens if several participants attempt to simultaneously carry out a transmission and the information gets lost? Carrier Sense Multiple Access with Collision Detection is an important procedure for smooth network...

CSMA/CD: Explanation of the process