Dear Robert. > I have decided to give SME a go. It provides Qmail on Centos 4.7, with > Centos 5.2 in beta. > > I chose SME because I also have to replace an NT server here as well, so > it makes a good fit. > > I have a test system working and building the mailserver replacement > system now. Then I will build the NT server replacement. You can also take a look at the very promising SOGo project: http://www.scalableogo.org/english.html It makes use of standard components (CardDAV, WebDAV...) and there are CentOS RPM packages available, too. Best Regards Marcus