O365 Setup

Set up a Windows Server 2012 or Windows Server 2008 R2 server.

1. Add the .NET Framework 3.51 [1] feature to the server
2. Add the IIS role to the server.
3. Install the Azure AD module [2]
   1. Microsoft Online Services Sign-In Assistant for IT Professionals RTW [3]
   2. Azure Active Directory Module for Windows PowerShell (64-bit version) [4]
4. Install database if needed.
   • MySQL 5.5 Community edition [5]
5. Install Retain [Retain_Exchange#Exchange_Module_Office365_Basics]

see also Setting up Retain with Office 365 [6]