Kaspersky will end support for MDaemon's old antivirus product, SecurityPlus, effective December 1, 2020.
The SecurityPlus upgrade is free and compatible with MDaemon versions 15.0.0 through 17.5.4. All versions of SecurityPlus running under these MDaemon versions must be upgraded by December 1, 2020 to prevent any interruption of Antivirus scanning.
MDaemon versions 18 and above contain the MDaemon Antivirus module already installed. Do not install any version of SecurityPlus on MDaemon installations running version 18.0 and above.
SecurityPlus v5.5.2 can be downloaded from the archive store. http://archive.altn.com/antivirus/Archive/5.5.2/
Simply run the installer overtop of the existing installation. MDaemon will stop while the installation runs and prompt to restart MDaemon when the installation completes.