M_Boats: List mail problem

To all on the Monty list, When I reply to any of the list emails lately, I get a reply from a mailer daemon that my message was not deliverable. This comes every time I reply to a message from the list. _________________________________________ Delivery Failure Report. The following message was incorrectly addressed. Recipient: "john" is unrecognised. Please contact "admin@clcboats.com" for further assistance _________________________________________ My message still makes it to the list OK, but I get a message back from this mailer daemon like there was another address cc'd in or something. I can't find any other address but the montgomery list address in the headers. Anybody else have this problem?? Or know how to fix it?? Rik