Receiving three month old messages

Hi,

On an address that's has been unsubscribed from this list I'm still
getting messages from months ago. Always from the same server:

pcbuddy.net (ns.pcbuddy.net) [66.132.188.173]

The headers are:

Received: from sambucca.ecomtel.com.au [210.9.56.2]
by localhost with POP3 (fetchmail-5.9.11)
for rob(at)localhost (single-drop); Sat, 29 May 2004 13:15:04 +1000 (EST)
Received: from pcbuddy.net (ns.pcbuddy.net) [66.132.188.173]
by sambucca.ecomtel.com.au with esmtp (Exim 3.35 #1 (Debian))
id 1BTu1Z-0005d7-00; Sat, 29 May 2004 12:56:41 +1000
Received: (qmail 8376 invoked from network); 12 Feb 2004 02:57:21 -0000
Received: from svr1.postgresql.org (HELO postgresql.org) (200.46.204.71)
by betterdriving.com with SMTP; 12 Feb 2004 02:57:21 -0000

Any ideas?
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.