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.
Using Xeams build 5878 in Spam firewall mode. The server is rejecting temporary email addresses (formatted as per http://www.xeams.com/temp-address.htm). "Allow temporary email addresses" is enabled in Server Configuration -> Advanced.