Iris is a CGI script, Exim MTA configuration file, and instructions to build an email server with virtual domain support, an authenticated SMTP relay, vacation, SMTP-time malware/spam/over-quota rejection, and Web-based account and domain administration, including domain-level access control for delegated domain management. It is based on Exim, Courier IMAP, MySQL, and Perl.
kernel v2.6.x Patch for correct paging/swap and disk statistics display when running on kernel v2.6 and other miscellaneous cpu stats - http://www.meisel.cc/software/procinfo19.patch