I had a user that was sending email to a mail handler and that email was being created automatically for help desk support. It stopped working one day for one person, but not everyone. Here's what my issue was and how I fixed it.
My incoming mail server was working properly because others users were able to send emails and create work on the specified project in Jira.
My Mail Handler was working because some people were able to send emails and create tasks on the specified project.
Atlassian pointed out that the user sending the email was not an Active user in Jira.
The default user on the Mail Handler was a user who was no longer with the company.
This combination is what the issue was. I changed the default user to an active users and the email started working.
Just hoping to help someone else troubleshoot this issue.
