It looks like the machine at adsl-b3-72-36.telepac.pt (184.108.40.206) is infected with an email virus/worm that is reposting messages to subscribers of the list directly. Some of them are just simple re-posts (like the "Queue not delivered" message from Julio Espada Olivares that was originally sent May 12, 2003). But the resend from Chad Morland included a virus attachment.
Keep an eye out for the messages, they'll include a received header like the following, and won't have proper mail list headers.
Received: from NetClube05 ([220.127.116.11]) by fep01-svc.mail.telepac.pt
(InterMail vM.5.01.04.13 201-253-122-122-113-20020313) with SMTP
id <[EMAIL PROTECTED]>;
Sun, 29 Jun 2003 19:26:57 +0100
And, if you're the subscriber to [EMAIL PROTECTED] that happens to have 18.104.22.168 as your IP address -- scan your system with an up-to-date virus checker!
-- Tom Collins [EMAIL PROTECTED]