IBM Connections 4.5 (+ mandatory iFixes – see IBM Connections support site) + IBM Connections 4.5 interim fix LO74571
One or more of the following:
IBM Lotus Domino 8.5.3 FP3 or later
IBM Domino 9.0 Social Edition
Microsoft Exchange 2007 SP3
Microsoft Exchange 2010 SP1
This article is possibly outdated. It mentions an older version of a software or tool. I haven't checked if the links are still working!
IBM sold their collaboration tools portfolio to HCL Software in 2019, so the product names changed and most of the IBM links are no longer working.