The ‘from’ address for emails sent to Zendesk apparently needs to be a different email address than the one used in Zendesk.

• Understanding and managing suspended tickets and spam – Zendesk help

If you don’t do this, it will be treated as a suspended ticket, and the message and reason are written in the “Cause of suspension descriptions” section on the linked page above.

This time the reason was:

Received from Support Address

The email was sent by (not forwarded from) one of your support addresses. For information about support addresses, see Adding support addresses for users to submit support requests.

Emails sent from the email address used as the ‘from’ address for emails sent from Zendesk apparently become suspended tickets.

That’s all from the Gemba.