1)   Free AVG Antivirus Software, Grisoft 6.0
Free AVG Anti-Virus, Grisoft, Professional Single User Edition, Advanced Virusprotection for Personal Computer, Resident Shield, Personal Email Scanner, On-Demand Test, Unlimited Automatic Update of Anti-Virus Database + Program Files, free of charge

 2)   MailDetective 2.0e
MailDetective is a monitoring tool to report on inbound and outbound email flow in corporate networks. Supports Microsoft Exchange, MDaemon, Kerio Mail Server, QMail, SendMail and many other servers.