In case a customer sends an e-mail with attachment, dummy user "Ticket System" creates the ticket on behalf of the customer.
The system then tries to add the attachment via comment but it failes due to
In case I add the "add attachment" permissions for service desk customers, I
get multiple warnings from Service Desk and I can only upgrade/administrate
once the permission scheme is fixed.
This was not the case when I used the service desk email handler (instead of