How to enable SMTP_BLOCK CSF

In this tutorial we are going to guide you to enable SMTP_BLOCK inside CSF

1- Login to your cPanel/WHM

2- Under "Plugins" you will see " ConfigServer Security & Firewall ".

3- Under " csf - ConfigServer Firewall " section click on " Firewall Configuration "

4- Search on this page for "SMTP_BLOCK"

5- Click on " ON " .


  • csf, firewall, cpanel-whm, SMTP_BLOCK, CSF, Security
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