Buffer overflow in Novell GroupWise 6.0.1 Support Pack 1 allows remote attackers to execute arbitrary code via a long RCPT TO command.
http://www.securityfocus.com/bid/5313
http://www.iss.net/security_center/static/9671.php
http://support.novell.com/servlet/tidfinder/2963273
http://archives.neohapsis.com/archives/bugtraq/2002-07/0296.html