MDMBlock

Lilu Kernel extension for blocking unwanted MDM notifications. The list of blocks currently includes:

/System/Library/CoreServices/ManagedClient.app/Contents/Resources/ManagedClientAgent
/usr/libexec/mdmclient

Boot arguments

-mdmboff (or -liluoff) to disable
-mdmbdbg (or -liludbgall) to enable verbose logging (in DEBUG builds)
-mdmbbeta (or -lilubetaall) to enable on macOS older than 10.8 or newer than 12
-mdmbproc to enable verbose process logging (in DEBUG builds)

Credits

Apple for macOS
vit9696 for Lilu.kext and for RestrictEvents.kext which is the basis for this project.