What processes spam

[JP Kelly]

I am trying to have a better understanding of how Plesk processes spam under Postfix.
When we select "Move spam to the Spam folder" or "Delete all spam messages" what is the mechanism for moving the messages? It looks like the .qmail file is unchanged when changing these options. Is there a file which is updated by these settings?

 

[IgorG]

All these tasks performed by Spamassassin. More details here http://download1.parallels.com/Plesk/PP12/12.0/Doc/en-US/online/plesk-administrator-guide/65690.htm