> 1) I notice that when someone sends an HTML message (via Netscape, for
> instance) that the resulting message contains the list header, followed
> by the MIME attachment, and the list footer.  Under Netscape, at least,
> it only displays the MIME attachment.  Is that a Netscape problem or a
> problem in Mailman with handling HTML messages?

It's kind of a combination of both.  Chances are that your document
has a header like this:

   Content-type: multipart/mixed; boundary=my-boundary

Then your message body looks like this:

  Hi there!  here's a message

  --my-boundary
  Content-type: image/gif
  Content-disposition: attachment; filename="image.gif"
  Content-description: image.gif
  Content-Transfer-Encoding: base64

  garbagesquiggleunreadabletextandnumbersthatmagicallybecomeanimage
  garbagesquiggleunreadabletextandnumbersthatmagicallybecomeanimage
  garbagesquiggleunreadabletextandnumbersthatmagicallybecomeanimage
  garbagesquiggleunreadabletextandnumbersthatmagicallybecomeanimage

  --my-boundary--

  Hi there!  here's a message

This tells your reader that anything encapsulated within the 
"my-boundary" tokens is a MIME attachment.  Anything outside of
that is ignored (unless you have a non-MIME-aware reader.

A "solution" is to wrap the header and footer with boundaries
as well:
 
  --my-boundary
  Content-type: text/plain; charset=US-ASCII
  
  Hi there!  here's a message

The termination string "--my-boundary--" should also be pulled out of
its current location and added to the end of the message.

But I don't know if it's right for mailman to do this...  It's kind
of icky.  At any rate, I doubt that anyone will do it until 1.0 is
taken out of beta.

> 2) Is there a way where I can automatically restrict subscribers to a
> subnet or domain name?  I want to use the list internally to my company,
> but there's nothing to keep an outside person from subscribing, unless
> someone moderates every subscribe request.

Not currently, unless you wrap the list aliases with something like
procmail and to some pre-mailman filtering.

See

   http://www.python.org/pipermail/mailman-users/1999-March/000912.html

> 3) Is there a way to restrict attachments?  I did see something about
> this on the archives, but there wasn't any answer given.  I guess not,
> then, eh?

The above URL can be used to catch attachments, or you can also add
certain headers or header regexes to bounce_matching_headers (under
the privacy menu).  Just restrict 

   content-type: .*(multipart/|/enriched|coded|html)
   X-MS-Attachment: 

This won't actually restrict them, but will hold them for listowner
approval.  Pre-mailman filtering is the only solution for true 
restrictions.

> 4) I'd like for a user to be able to disable the automatic monthly
> password reminder.  Is there some way to do that?

Not currently.  But I admit that this would be a nice feature; I get half
of my list memberships that hate it, and half love it.  :)

What would be *really* slick is for mailman to send out all password 
reminders in a single message.  It's really annoying when you're on 25
lists and get a reminder for each one every month.  If mailman could
send one message in the form

   listname1:  password1
   listname2:  password2
   listname3:  password3

that would be wonderful.  

Chris