Version requirements for on-premises Domino servers

This topic describes the IBM® Domino® version requirements for on-premises Domino servers.

Table 1. Version requirements for on-premises Domino servers
On-premises server type Supported versions
Mail routing servers that connect directly to service mail servers for mail routing.
  • IBM Domino 8.5.1 Fix Pack 2 or later fix pack
  • IBM Domino 8.5.2 or later
  • IBM Domino 9 or any later release.
Administration server (used by the Administration Process) for the Domino directory of the on-premises hub domain.
  • IBM Domino 8.5.1 Fix Pack 2 or later fix pack
  • IBM Domino 8.5.2 or later
  • IBM Domino 9 or any later release.
Note: The Domino directory template must be at least the version provided with IBM Domino 8.5.1 Fix Pack 2.
Directory synchronization servers (if not the administration server) Any version of Domino supported by IBM.
Mail servers that request the free time of service users
  • IBM Domino 8.5.1 Fix Pack 2 or later fix pack
  • IBM Domino 8.5.2 or later
  • IBM Domino 9 or any later release
Passthru domain servers Any version of Domino supported by IBM. Use IBM Domino 8.5.2 or later for fastest response time for connections from servers in the service to on-premises servers.