<prompt> Human: My mom received a check from scottrade in the mail today. She doesnt have an account with them that she knows of, has anyone ever heard of this? The check is for a sizable amount of money., we dont want to cashdeposit the check for fear of itbeing a scam...please any advice?  <response>: Its probably a scam, but I would give scottrade a call first to see what they know about it. 