This is a Mailman mailing list bounce action notice:

    List: curl-library
    Member: minigabriel_at_msn.com
    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 Sat, 3 Oct 2009 02:30:01 +0200
from list_at_localhost.localdomain [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<minigabriel_at_msn.com>
    (reason: 550 Requested action not taken: mailbox unavailable)

   ----- Transcript of session follows -----
... while talking to mx4.hotmail.com.:
>>> DATA
<<< 550 Requested action not taken: mailbox unavailable
550 5.1.1 <minigabriel_at_msn.com>... User unknown
<<< 503 Need Rcpt command.
<pweisman_at_timemgmt.com>... Deferred: Name server: timemgmt.com.: host name lookup failure