ServiceDeskPlus: OpManager & ServiceDesk integration with condition?

Hi,

I have a new site using all ManageEngine solution with OpManager, AppManager, ServiceDesk & Desktop Central...

Currently found there is integration for OpManager alert to ServiceDesk for ticket creation, but found something is not right, as ServiceDesk will pick up whatever email and create as ticket, which created some false tickets...

How to configure ServiceDesk to create ticket based on certain condition? Eg. create for valid registered devices only and etc...

I need some expert advise on this...

Thanks!

Regards,
gary