A website on my server opens when a third-party website name is used

Symptoms

When visiting someone else's website, one of the websites on your server or the ispmanager 6 panel opens.

Causes

The A record of the other website points to your server's IP address. By default, the web server redirects requests for unknown websites to the first available website or the default website.

Solution

Create a stub website with any name and enable the "Default website" option in its settings.

Further, when visiting similar websites or entering the server's IP address in the address bar, the created stub website will open.