David C Niemi has more than 10 years of experience developing, deploying, integrating, and administering messaging systems of all sizes, using Postfix, Sendmail, Syntegra Mail*Hub, and Microsoft Exchange, Lotus NOTES, and several other technologies.  He is also an open source software developer and maintainer, and co-founded Tux.Org, a nonprofit corporation that aids free software projects.  He has been working with UNIX and Internet technologies since the late 1980s, and Linux since 1993.