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.
It is about -50 when they sending with only very few word in subject and content. Bayesian thinks it good and SPF pass.
But when they are really sending AD,it is easy to catch them by body key word filter.
