Tried to setup Workman & WorkDocs after viewing this 30 minute video:
Didn’t want to use an existing Active Directory server and went for Simple AD:
Simple AD is a Microsoft Active Directory–compatible directory from AWS Directory Service powered by Samba 4 (developed with Microsoft’s assistance).
Simple AD supports commonly Active Directory features like user accounts, group memberships, domain-joining Amazon Elastic Compute Cloud (Amazon EC2) instances running Linux & Microsoft Windows, Kerberos-based single sign-on (SSO), and group policies. This makes it even easier to manage Amazon EC2 instances running Linux and Windows, and deploy Windows applications on AWS.
WorkMail is really easy to setup if you can change the DNS settings of your domain yourself. Since WorkMail isn’t available in all AWS regions – you should note the following:
A Simple AD running on AWS only works within a region. So make sure you setup WorkMail & WorkDocs in the same region – in order to use the same public URL and the same user accounts.
CloudSceptic.nl : an example of a DNS setup for WorkMail