The JITL mail job should throw an error when the authentication fails

Current Situation

when mail.smtp.user and mail.smtp.password can not authenticate the account in the mail server, no exception is thrown.
In the log the message

2022-08-04 11:20:11.725+02:00 [STDOUT] [INFO]mail server is unavailable, mail for recipient [uwe.risse@online.de]AuthenticationFailedException while connecting to smtp.1und1.de:587 uwe.risse@online.de /******** --> javax.mail.AuthenticationFailedException: 535-Authentication credentials invali
535 Insufficient security or privacy level.

is reported.

Desired Behavior

When mail.smtp.user and mail.smtp.password can not authenticate the account in the mail server, an exception should be thrown and the job execution should fail.