One of the following directory services:
Platform
Requirement
GroupWise
GroupWise 18
Recommended
Linux
eDirectory 9 plus the latest patch for Linux
eDirectory 8.8 plus the latest patch for Linux
Supported but not tested
Windows
Windows Server 2022
eDirectory 9 with the latest patch for Windows
Windows Server 2016
eDirectory 8.8 with the latest patch for Windows