We have configured our Incoming JIRA Email inside a DL
Eg.
we have an incoming email configured to jira@xyz.atlassian.net
We have a DL created DL@xyz.com which has user1@xyz.com, jira@xyz.atlassian.net
If we send an email to DL@xyz.com it's not creating a task
In case if we send to DL@xyz.com; jira@xyz.atlassian.net a new task is being created