[Cialug] Mailman configuration question

[Daniel A. Ramaley]

I have a server running mailman (among other things) on a machine with a 
hostname of "netreg". That name is aliased as "lists". The problem is 
that the headers of messages that are sent through mailman have 
inconsistent headers. Some headers say "netreg", others say "lists". 
For example:

Sender: dantest-bounces at netreg.drake.edu
To: dantest at netreg.drake.edu
Errors-to: dantest-bounces at netreg.drake.edu
X-BeenThere: dantest at lists.drake.edu
List-Post: <mailto:dantest at lists.drake.edu>
List-Help: <mailto:dantest-request at lists.drake.edu?subject=help>
List-Id: dantest.lists.drake.edu

All should say "lists" with no mention of "netreg". Any idea how to fix 
this? The MTA on the machine is Sendmail. Looking at the maillog, it 
appears to me that sendmail receives messages labelled "lists":

Jan 29 14:09:00 netreg sendmail[2417]: l0TK90v3002417: 
from=<dantest-bounces at lists.drake.edu>, size=1936, class=-30, nrcpts=1, 
msgid=<200701291408.37943.daniel.ramaley at drake.edu>, proto=ESMTP, 
daemon=MTA, relay=localhost.localdomain [127.0.0.1]

So is Sendmail mangling the addresses? If so, is there an easy way to 
tell it not to do that?

------------------------------------------------------------------------
Dan Ramaley                            Dial Center 118, Drake University
Network Programmer/Analyst             2407 Carpenter Ave
+1 515 271-4540                        Des Moines IA 50311 USA