I just now changed HISTORY@PSUVM to use List-address= NJE, since our default is FQDN. See if this helps. Eric sent out a note about this type of problem a month ago. In it, he said "A serious problem exists when a peered list has a mix of 1.8 and 1.7 peers, and the 1.8 peers are configured to use Internet addresses ("List-Address= FQDN", or equivalent default)."