There is no difference in the installer for Xeams Community and Enterprise Edition. It will run as if you have purchased the Enterprise Edition for the first 30 days. It will then get converted to Community Edition unless a license is purchased.
Schaf,
The article you linked talks about Two-way SSL authentication. Check https://cheapsslsecurity.com/p/what-is-2-way-ssl-and-how-does-it-work/ for details.
Xeams currently does not support two-way SSL. Therefore, the only way to accomplish this is by specifying Xeams's public IP address in O365.
