[Evolution] Reply to List not Newsgroup

[James Pifer <jep obrien-pifer com>]

I'm a member of a mailing list for our helpdesk. I'm not sure what
mailing list software they use. If I try to respond to a message that I
get from the list Evolution wants to do a "Post To:" an mbox instead of
giving me the normal To: the mailing list address. 

In the headers I think this is the important part:

Newsgroups: public.remedy.arsystem.general
Date: Tue, 16 May 2006 08:11:26 -0600  (10:11 EDT)
Reply-To: arslist ARSLIST ORG
Sender: Action Request System discussion list(ARSList)
<arslist ARSLIST ORG>
From: Some Body <someadd domain COM>
Subject: Re: Don't see my own posts?
To: arslist ARSLIST ORG
In-Reply-To: <1147779275 16589 18 camel server com>

I don't see the "Newsgroups" line in the headers of my other mailing
lists. I'm trying to work with the people on that list to understand
what is going on, but I'm not really getting anywhere. 

I use this same account and client for all my mailing lists, so I don't
think it's an evolution "problem". But, I was hoping someone here could
shed light on it for me.

Thanks,
James