The problem is that each of the peers should not be subscribed to each of the other peers. Not only do you have a review loop, I see it as a mailing loop also. This is what it probably should be: BNLVMA--- PSUVM --- IRLEARN BNLVMA is subscribed to the list at PSUVM. BNLVMA's peer contains a subscription only for PSUVM. IRLEARN is also subscribed to the list at PSUVM. IRLEARN's peer contains a subscription only for PSUVM. If a review is sent to BNLVMA, BNLVMA forwards the request to PSUVM, and PSUVM forwards the request to IRLEARN.