This version is the ultimate release for macOS High Sierra 10.13.6 .
(Mail, DNS, DHCP, VPN, Websites, Wiki, Calendar, Contacts) macOS Server 5.6.3
As a legacy version, 5.6.3 has developed several significant maintenance challenges for those still running it: This version is the ultimate release for macOS
macOS Server 5.6.3, released on , stands as a pivotal "bridge" version in the history of Apple's server software. It was specifically designed to be the final version for users on macOS High Sierra (10.13.6) who needed to maintain traditional "open-source" server features before Apple's radical shift toward management-only tools. Core Purpose and Compatibility Contacts) As a legacy version
(Caching Server, File Sharing, Time Machine Server)