When we first launched Plesk on our environment we used our own custom spamassasin rules the same way we do it on cPanel servers which seemed to work great. Plesk however recommended we enable their version so that customers could manage their sensitivity aswell as blacklist and whitelist email addresses via their plugin.

Customers hence now have the ability to manage their blacklisting and whitelisting better than before and and enable AV or disable if they so choose and have their own AV on their system if they prefer it to be scanned that way. We however recommend both to be enabled.

Note if your spam has increased or you have any issues feel free to contact us and forward us some examples so we may look into if we can better protect your inbox.

Please contact support if you have further queries.

Thank you for your understanding as we try to keep systems stable and working.