Symantec Brightmail AntiSpam 6.0 build 1 and 2 allows remote attackers to cause a denial of service (bmserver component termination) via malformed MIME messages.
http://www.vupen.com/english/advisories/2005/2076
http://www.symantec.com/avcenter/security/Content/2005.10.12d.html
http://www.securityfocus.com/bid/15087