"Initiatives that allow [Linux] to effectively host 100 million mailboxes and run huge backbones for mail systems are exciting for us," said Greg Olson, co-founder and chairman of Sendmail Inc., in Emeryville, Calif. Sendmail uses an IBM Linux mainframe for development and runs a host of Linux servers. http://www.zdnet.com/eweek/stories/general/0,11011,2660196,00.html