stop mailing to remail@infinity, please

Somebody has been repeatedly (probably by a script) trying to remail through me to "remail@infinity.hip.berkeley.edu", which bounces back to me (unknown user). If it's somebody on this list, could you stop? Otherwise I'll have to have something grep for it so I can source- block the sender, and I don't really want to get into looking at incoming traffic. Eli ebrandt@hmc.edu