...policy in place, companies will be severely limited in what action can be pursued even in clear cases of employee e-mailabuse. Therefore, businesses need a policy linked to a security-conscious employee culture that receives continuous training...
http://www.computerweekly.com/Articles/2002/04/18/186520/file-under-s.htm
...dmoz.org/Computers/Internet/Abuse/Spam/Blacklists/). Commercial blacklist database providers include the MailAbuse Prevention System (http://www.mailabuse.org/). • Heuristic identification: The majority of spam messages...
http://www.chameleontech.com/Whitepaper_SpamProtection_en.pdf