[Unity-idm-discuss] Mail notification is not working in unity 4

[Sander A. <sa....@fz...>]

Hello again,

we have also the issue that email notifications are failing on the
server. We use the same config and message templates like in the 3.16.1
which is working on other servers.

We got the following stacktrace. Do you have any idea about this?

2024-07-30T07:53:11,572 [ForkJoinPool-1-worker-4179] ERROR unity.server.notification.EmailFacility: E-mail notification failed
java.lang.ClassCastException: class com.sun.mail.handlers.text_plain cannot be cast to class javax.activation.DataContentHandler (com.sun.mail.handlers.text_plain and javax.activation.DataContentHandler are in unnamed module of loader 'app')
        at javax.activation.MailcapCommandMap.getDataContentHandler(MailcapCommandMap.java:631) ~[javax.activation-api-1.2.0.jar:1.2.0]
        at javax.activation.MailcapCommandMap.createDataContentHandler(MailcapCommandMap.java:585) ~[javax.activation-api-1.2.0.jar:1.2.0]
        at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:630) ~[javax.activation-api-1.2.0.jar:1.2.0]
        at javax.activation.DataHandler.writeTo(DataHandler.java:329) ~[javax.activation-api-1.2.0.jar:1.2.0]
        at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:340) ~[javax.mail-1.6.2.jar:1.6.2]
        at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1575) ~[javax.mail-1.6.2.jar:1.6.2]
        at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2271) ~[javax.mail-1.6.2.jar:1.6.2]
        at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2231) ~[javax.mail-1.6.2.jar:1.6.2]
        at javax.mail.Transport.send(Transport.java:123) ~[javax.mail-1.6.2.jar:1.6.2]
        at pl.edu.icm.unity.engine.notifications.email.EmailChannel.sendEmail(EmailChannel.java:110) ~[unity-server-engine-4.0.0.jar:?]
        at pl.edu.icm.unity.engine.notifications.email.EmailChannel.lambda$sendNotification$0(EmailChannel.java:92) ~[unity-server-engine-4.0.0.jar:?]
        at java.base/java.util.concurrent.ForkJoinTask$AdaptedRunnable.exec(ForkJoinTask.java:1382) [?:?]
        at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) [?:?]
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) [?:?]
        at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) [?:?]
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) [?:?]
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) [?:?]

The configuration of the message templates is attached.

Best regards,
Sander

-- 
Large-Scale Data Science
Juelich Supercomputing Centre

phone: +49 2461 61 8847
fax: +49 2461 61 6656
email: sa....@fz...

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