Messages on my list normally are sent with the "Reply-To" header set to the
list;  when recipients choose "reply", the reply is addressed to the list
as a whole.  Yesterday, a subscriber (only subscribers can post) sent an
advertisement where "Reply-To" was the same as "From";  any replies would
go directly to him  My question is how did he do this and how do I prevent
future occurences?  Does a "Reply-To" header in the incoming message
prevent listserv from sending a new "Reply-To"?
 
Here's the header from the message in question:
 
> Received: from gold.wvnet.edu (gold.wvnet.edu [129.71.2.26]) by
ivory.lm.com (8.6.12/8.6.12) with ESMTP id IAA21491 for <[log in to unmask]>;
Fri, 8 Nov 1996 08:11:30 -0500
> Message-Id: <[log in to unmask]>
> Received: from gold (129.71.2.26) by gold.wvnet.edu (LSMTP for Windows NT
v1.1a) with SMTP id <[log in to unmask]>; Fri, 8 Nov 1996 8:09:10
-0500
> Date:         Fri, 8 Nov 1996 08:11:21 -0800
> Reply-To: [log in to unmask]
> Sender: WVNET CANCER discussion list <[log in to unmask]>
> From: Steve Boney <[log in to unmask]>
> Subject:      New  Product !!
> To: Multiple recipients of list CANCER-L <[log in to unmask]>
 
Normal messages have
 
> Reply-To: WVNET CANCER discussion list <[log in to unmask]>
 
Barry Wolman
Pittsburgh, PA