Thanks for pointing me in the right direction: "Pegasus mail" (
http://www.pmail.com/ ) is the culprit, not Mailman!
Fil wrote:
>
> It is most probably your mailer (Netscape) that reads the List-* headers
> and, instead of printing them on the screen, gives you this nice little
> line.
>
> @ Roger Buck ([EMAIL PROTECTED]) :
> > There is a subscription message ("Double-click ...") that appears on
> > all messages to/from the list (mailman 2.0 and 2.5) .
>
> -- Fil
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Mailman-Users maillist - [EMAIL PROTECTED]
http://mail.python.org/mailman/listinfo/mailman-users
