BCHAN400 wrote:
.....As some of you suggested, I questioned the sender of the check about his identity and asked for verifiable information, ie. name of his company, address and phone number.
You should always do that before accepting work from a new client. Learn from your mistakes.
Here's his contact information
I doubt very much that that's his genuine name and address. That could just be a name and address he stole from someone else.
And here's a picture of that very address:

(with thanks to Google Earth)
[Edited at 2017-08-22 15:18 GMT]