Tutorials



How to Build Your Own Email Newsletter Service Without Mailchimp (Using Mautic, Mailtrain, or Listmonk)?

  • August 18, 2026, 02:41:25

Greetings, friends!Using cloud-based email marketing platforms (SaaS) like Mailchimp, Brevo, or ActiveCampaign quickly becomes financially impractical as your subscriber base grows. Once you cross the...

Why is the disk on the server overflowing and how to find the "hidden" files?

  • August 18, 2026, 01:45:57

Greetings, friends!Sudden disk space depletion on a Linux server is one of the most common causes of emergency failures. This issue can stop databases, break web server operations, and freeze system p...

Turning a Linux VPS into a full-fledged PC: Setting up VNC in 10 minutes

  • August 18, 2026, 12:23:12

Greetings, friends!Deploying a Graphical User Interface (GUI) on a virtual server becomes necessary when the console SSH interface is no longer enough. Working with graphical software, testing browser...

How to protect the server from hacking: Setting up 2FA via Google Authenticator PAM

  • August 18, 2026, 11:51:31

Greetings, friends!In modern realities, classical password protection or SSH key authorization is no longer enough if an administrator's account becomes compromised. Implementing Two-Factor Authentica...

What should I do if the server's IP is blacklisted (Spamhaus, etc.)?

  • August 14, 2026, 12:11:06

Suppose you have set up a mail server, prepared an important B2B email campaign with commercial proposals for client leads, or launched automated order notifications for an online store. But suddenly,...