How to install and configure CSF on Ubuntu 21.04

[@Whally149]

Please i need help on this

[@Whally149]

How do i Configure CSF to Allow Outbound SMTP?

[@linuxhelp5096]

Sure, we will provide the solution soon.

[@linuxhelp5096]

set SMTP_BLOCK = "0" in csf.conf then restart the service
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