Google is your friend. Notice that a Message-ID header exists but has no string after the label:
Jul 28 09:45:10 boom3 postfix/cleanup[6921]: B9A7225C001: message-id= See http://archives.neohapsis.com/archives/postfix/2005-02/1410.html Joseph Brennan Lead Email Systems Engineer Columbia University Information Technology ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
