This is what I am getting. For some reason it is looking at the JIRA host name of bossfilewin rather than my actual SMTP server i have set up.
Not sure where I can change that.
An error has occurred with sending the test email:
com.atlassian.mail.MailException: javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 504 5.5.2 <bossfilewin>: Helo command rejected: need fully-qualified hostname