This is a Mailman mailing list bounce action notice:

    List: curl-and-python
    Member: ccormie_at_aussiemail.com.au
    Action: Subscription disabled.
    Reason: Excessive or fatal bounces.
    

The triggering bounce notice is attached below.

Questions? Contact the Mailman site administrator at
mailman_at_cool.haxx.se.

attached mail follows:

The original message was received at Tue, 10 Nov 2009 06:50:05 +0100
from localhost.localdomain [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<ccormie_at_aussiemail.com.au>
    (reason: 550 Recipient Rejected: Account Inactive)

   ----- Transcript of session follows -----
procmail: Extraneous locallockfile ignored
... while talking to sitemail.everyone.net.:
>>> DATA
<<< 550 Recipient Rejected: Account Inactive
550 5.1.1 <ccormie_at_aussiemail.com.au>... User unknown
<<< 554 No valid recipients specified