Mail forward to Zoho Help Desk not working

Mail forward to Zoho Help Desk not working

When I first setup my Zoho Help Desk mail forwarded from support@mycompany.com was creating the tickets in Zoho. 
For some reason, this has stopped and nothing is being created. 
I can add tickets manually.

Can someone please let me know if this is a system issue or if I have something setup incorrectly. I checked the help topics to make sure I was following the correct procedures.

Thank you.