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.
I solved the problem myself. I'veactivaded SSL but I haven't changed to port form 25 to 465.
In this configuration Xeams is a SMTPS Client and not a SMTP server using just TLS. Here was the misunderstanding issued.
