No notification if a mail was not forwarded successfully. Holdmail 2.0.1

[375gnu]

Question/Issue Overview

If you forward a mail then you see message similar to Mail 760 successfully sent to [email protected]. And in logs you can find appropriate message
java[44774]: 2018-10-11 12:19:55.596 INFO 44774 --- [nio-8080-exec-9] c.s.holdmail.smtp.OutgoingMailSender : Outgoing mail forwarded to [email protected]

But if your email was rejected the nothing showed in WEB UI and nothing is logged.

Expected Behavior

UI message + log entry.

Current Behavior

Nothing.

Reproducible Sequence

1. Install 2.0.1
2. Try to forward some emails to real SMTP servers.