This is a Mailman mailing list bounce action notice:

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

The triggering bounce notice is attached below.

Questions? Contact the Mailman site administrator at
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attached mail follows:

The original message was received at Mon, 28 Sep 2009 12:01:16 +0200
from localhost.localdomain [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<persu.kd_at_gmail.com>
    (reason: 550 5.2.1 The email account that you tried to reach is disabled. 4si21609158ewy.78)

   ----- Transcript of session follows -----
... while talking to gmail-smtp-in.l.google.com.:
>>> DATA
<<< 550 5.2.1 The email account that you tried to reach is disabled. 4si21609158ewy.78
550 5.1.1 <persu.kd_at_gmail.com>... User unknown