How does travel rule affect intermediary banks which have no information for either the remitter or the beneficiary?

Has this rule been effective? I still receive wires without addresses of the sender and/or receiver.

You are only responsible for passing on whatever you receive from other banks. However, be aware OFAC does not care if you say I never received the info. OFAC requires banks to know where wires are coming from and where they are going to.

Domestic banks must have thier customer's info on the wire.

You keep what you recieved; you are not required to obtain additional information.

(ii) For each payment order that it accepts as an intermediary bank, a bank shall retain either the original or a microfilm, other copy, or electronic record of the payment order.