In the post they advise that if you are unsure if the property you are looking at is a rental to call a real estate office in your area.
They say that they have the resources that can be used to see if the property is for sale.
They can also do some investigation to prevent a prospective tenant from losing money.
They say in the post that they want to help keep a person and their hard earned money safe.
They also say to be suspicious if there is an urgency in the would-be landlord to get the deal done and if it appears too good to be true it likely is.