We use Zoho Desk and have four separate departments with four separate workflows.  If a ticket is moved or someone CCs a department email in a different department, it creates a new ticket in the different department and creates another new ticket in the same department saying that a ticket has been created.

Is there a way to prevent these tickets from being created?  A filter for "[##" and "##]" to automatically delete any of these emails would be easiest, but I don't see a way to blacklist certain words or characters.

Is there an easy way to prevent departments from emailing each other?