Question SpamAssassin disable server-wide but enable individual = disabled?

[nethubonline]

Hi,

Plesk version: 18.0.45
OS: AlmaLinux release 8.6 / Windows 2019

We checked Plesk Windows supports disabling server-wide SpamAssassin spam filtering but users can still have their own individual settings for spam filter. However for Plesk Linux, if I disabled server-wide SpamAssassin spam filtering even enable individual setting, then whole spamassassin service is disabled and user mailbox cannot detect SPAM. Is it a bug?

Below is what I tested:

Windows
Tools & Settings > Switch on server-wide SpamAssassin spam filtering > unchecked
Tools & Settings > Apply individual settings to spam filtering > checked
user mailbox can still detect SPAM

Linux
Tools & Settings > Switch on server-wide SpamAssassin spam filtering > unchecked
Tools & Settings > Apply individual settings to spam filtering > checked
Service is disabled, user mailbox cannot detect SPAM

How can I disable server-wide SpamAssassin in Plesk Linux but still let user mailbox able to detect SPAM?

 

[nethubonline]

any one?