[Mimedefang] Rejecting in filter_relay()

[Delahunty, Mark]

Hi 

I want to reject RBL-listed relays, but I also want to notify any
genuine RBL-listed senders that they are listed, e.g:

  return('REJECT', "Rejected because $ip is listed in $someRBL") ;

The man page says that any such text returned by filter_relay() is
ignored. Is it OK/recommeneded to do this in filter_sender() ?

Thanks

Mark