VERIFIED SOLUTION i
EngageOne Digital Delivery version 2.1.1 and earlier on, do not support Windows Server 2016. Windows Server 2016 support will be available in E-messaging version 2.3, release due in November 2017. However v2.3 will only be certified with Tomcat 8 and not with any other web application server.
UPDATED: July 25, 2017