Tony Schreiner wrote: > > How can I get my cluster master to not relay messages addressed to > @master.cl.bc.edu? I'm no expert, but I'm guessing a transport map on the cluster master to relay locally is required? So /etc/postfix/transport on the master with an entry something like this: master.cl.bc.edu relay:[master.cl.bc.edu] see: http://www.postfix.org/transport.5.html