We have had some users report that after upgrading Plesk, MagicSpam ceases to function. This is because the Plesk updater overwrites some key files.
In order to avoid this when you're upgrading your Plesk installation, please disable MagicSpam first, do the upgrade, then re-enable MagicSpam. This way, you do not have to worry about "breaking" the installation and missing out on spam protection.
Thank you for choosing MagicSpam!