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Question DNSBL settings in Plesk Email Security vs general mail server settings?

jnthn

New Pleskian
Server operating system version
AlmaLinux 10.1
Plesk version and microupdate number
18.0.77
In the settings of the Plesk Email Security extension, in the "Server Settings" tab under the "Advanced" section, is a setting titled "DNSBL" where I can enable various DNS block lists:
CleanShot 2026-04-04 at 12.02.50@2x.pngHow does this relate to the general "Mail Server Settings" / "Server-wide mail settings", which in the "Settings" tab has a setting titled "Spam protection based on DNS blackhole lists"?
CleanShot 2026-04-04 at 12.02.26@2x.png
Do they have the same function? Would it be best to disable the general setting when I'm using the Plesk Email Security extension?

In general, I haven't been able to find technical documentation about the Plesk Email Security extension and its settings. This would be much appreciated, especially since it's a paid extension.
 
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