Imunify360 (single-user) license compatibility with DNS-Only cPanel.

Issue

You may be asking whether it is advisable to install Imunify360 on a cPanel DNS-Only serve, and how users would be counted under the license in this environment.

Environment

• Imunify360
• cPanel DNS-Only

Solution

Yes, Imunify can indeed run in a DNS-only WHM server. If you are handling DNS records entirely by root via WHM > DNS Zones, then you should be able to install it with a single user license.
 
By contrast, if you create accounts to have the zones configured automatically, then these will be detected by the agent and the license won't work.
 
The recommendation is that you check /etc/passwd to make sure no additional Linux user accounts have been created on this server.
 
You can also verify with the following command for accounts > 1000 < 6000:
 

/usr/bin/awk -F '[/:]' '{if ($3 >= 1000 && $3 < 60000 && $3 != 65534) print $1}' '/etc/passwd'

Cause

A single user license can be used in a DNS-only WHM server, as long DNS records and zones are managed by root via DNS Zones in WHM.

Useful links

https://docs.cpanel.net/knowledge-base/dnsonly/cpanel-dnsonly/