When trying to restart the application, Plesk shows the alert “Unable
to start up Tomcat web application: Possible reason - Tomcat service is
not currently running on the server.”



If
you have Tomcat and MailEnable Professional installed simultaneously on
your server, it is a conflicting setup, because HTTPMail component of
MailEnable Professional and Tomcat share the same port 8080. See the
“Post-Installation Issues” section of the Plesk 7.5 for Windows
Installation guide for details on how to resolve the conflict.