You could attempt a direct (without entry) claim against the mRDC bank and might even be successful if the funds are still there. But if the double-dipper depositor made the second (real check) deposit fraudulently (as opposed to in error), the odds are against there being any funds left. Since the mRDC bank probably submitted its image for payment before you presented your check (or check image), it has a strong argument that it has the better claim to the funds, and it's likely to deny your request. Assuming that's the case, you have no one to pursue other than the individual who defrauded you, your own customer.
The Federal Reserve recognized this problem when it trotted out its second proposed rule to amend Regulation CC. The proposal, which still needs final approval, would say that the bank that accepts mRDC adds risk to the check collection system because it introduces the potential for the check to be deposited two or more times (which isn't possible if the actual check is taken for deposit). And therefore, suggests the proposal, the mRDC bank should assume responsibility for that risk, and would indemnify from loss a bank that takes the actual check for deposit and receives it back as a return item, unpaid.
We'll be watching to see how that proposal fares in the next few months.
_________________________
John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8