Fornex
"Your Server is under threat" in ISP4

As of December 1, 2016, ISPmanager developers, ISPsystem, announced that they will no longer support and release updates for the ISPmanager4 control panel.

Ansible for Ubuntu 18.04

How to install and configure Ansible on Ubuntu 18.04

Apache SpamAssassin in cPanel

Guidelines for setting up junk email filters in the cPanel control panel

BoxTrapper in cPanel

Guidelines for setting up spam protection in the cPanel control panel

CloudFlare - main tabs

The main features of CloudFlare

CloudFlare - disabling and cleaning the cache

Disabling and cleaning the cloudflare cache

DKIM + Exim for Ubuntu

Instructions for setting up DKIM on a server without a control panel

DKIM in ISPmanager4

Description of the mail authentication method that allows the recipient to verify that the email was really sent from the claimed domain

DKIM and SPF in BrainyCP

Description of the mail authentication method that allows the recipient to verify that the email was really sent from the claimed domain

DKIM and SPF in Hestia CP

Description of the mail authentication method that allows the recipient to verify that the email was really sent from the claimed domain

DKIM and SPF in ISPmanager5

Description of the mail authentication method that allows the recipient to verify that the email was really sent from the claimed domain

DKIM and SPF in Vesta CP

Description of the mail authentication method that allows the recipient to verify that the email was really sent from the claimed domain

DKIM and SPF on Virtual Hosting

Description of the mail authentication method that allows the recipient to verify that the email was really sent from the claimed domain

DNS Amplification

Information on a common type of DDoS attack

Iptables

Description of examples of how to use Iptables

Linux Malware Detect

Linux Malware Detect Virus Scanning Software Guide