Since updating the version of the JDK of Jaspersoft, Jaspersoft emails are not working. In the logs the following errors are noted:
ERROR SecureExceptionHandlerImpl,quartzScheduler_Worker-1:116  - fail to send out alert mail notification
ERROR ReportExecutionJob,quartzScheduler_Worker-1:367  - fail to send out alert mail notification
com.jaspersoft.jasperserver.api.JSExceptionWrapper: Domain contains illegal character
Release : 16.0.3, 16.1.0
The newer versions of the JDK perform validation on the "sender from address" that older versions did not.
Ensure that the sender from address includes no special characters.