Issue Summary

When Jira does not process an incoming email it does not bounce the email back!

Steps to Reproduce

1. Configure the incoming mail handler to create/add a comment to issue
   • Do not set a default reporter.
   • Set create user to False

1. Send an email to the mail handler's email address from a user(not in the cloud instance) with an issue-key in the subject

Expected Results

The email should be bounced back, possibly with an appropriate error/failure message!

Actual Results

The incoming email is not processed and silently ignored(not bounced back)

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available