OpenMail
HP semi-clone of MsExchange, so depends on MsOutlook as client
there were once dashed hopes that it would go Open Source after Bruce Perens went to HP.
licensed by Sam Sung in http://linuxtoday.com/news/archives/200111/16 |2001 licensed by Scalix in http://www.scalix.com/release2.html |2003
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