I set up a business rule to assign a technician when a ticket is created from a Requester's name.

An email arrives and a ticket is created and unassigned. 

The system will not assign the new ticket.

I have enabled the business rule

The Request is raised from the same Site as that of the Business Rule ( The site is blank) 

The request that is coming in matches the criteria of the Business Rule

And

the option Override the Request values with Business Rule value is checked already!

Any thoughts