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.
For the outgoing,is it possible to disable STARTTLS? Only use normal mode to connect the remote server? As the speed will slow down by using STARTTLS. Normal connection is much faster than STARTTLS