VSB-TUO/Not working mail server on dev-6

[Kasinhou]

Subscriptions and sending health report to email are not working. dev-6.pc mail server has to be set up

From logs:

2025-10-10 12:07:10,263 dspaceRunnableThreadExecutor-1 ERROR unknown unknown org.dspace.app.healthreport.HealthReport @ Error sending email: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: dev-6.pc, 25; timeout -1
        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2209)
        at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:740)
        at javax.mail.Service.connect(Service.java:366)
        at javax.mail.Service.connect(Service.java:246)
        at javax.mail.Service.connect(Service.java:195)
        at javax.mail.Transport.send0(Transport.java:254)
        at javax.mail.Transport.send(Transport.java:124)
        at org.dspace.core.Email.send(Email.java:482)
        at org.dspace.app.healthreport.HealthReport.internalRun(HealthReport.java:182)
        at org.dspace.scripts.DSpaceRunnable.run(DSpaceRunnable.java:150)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.net.UnknownHostException: dev-5.pc
        at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:229)
        at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.base/java.net.Socket.connect(Socket.java:609)
        at java.base/java.net.Socket.connect(Socket.java:558)
        at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:359)
        at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:238)
        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2175)
        ... 12 more

[Kasinhou]

I did not receive any email after depositing item on dev-6 neither on dev-5 (I tried to set mail.server = dev-5.pc as well).
I also tried to do it locally, but without success.
Health report was completed but has not been sent to email address. There was nothing in the logs. The same for sending subscription. It is possible that I set up email incorrectly.

Share submission wasn't working because of Invalid Addresses

2025-10-10 15:14:50,974 http-nio-8080-exec-8 ERROR 4ffb8bf7-3688-461b-b425-be0fbf088a7f e399e4e0-977e-427e-b4af-8dcec1091d16 org.dspace.app.rest.repository.SubmissionController @ Unable send the email because: Invalid Addresses
2025-10-10 15:14:50,974 http-nio-8080-exec-8 ERROR 4ffb8bf7-3688-461b-b425-be0fbf088a7f e399e4e0-977e-427e-b4af-8dcec1091d16 org.dspace.app.rest.exception.DSpaceApiExceptionControllerAdvice @ An exception has occurred (status:500)
java.lang.RuntimeException: Unable send the email because: Invalid Addresses
	at org.dspace.app.rest.repository.SubmissionController.sendShareLinkEmail(SubmissionController.java:218)
	at org.dspace.app.rest.repository.SubmissionController.generateShareLink(SubmissionController.java:119)
	at org.dspace.app.rest.repository.SubmissionController$$FastClassBySpringCGLIB$$6d109821.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)