I have a client who needs that already using M$ Exchange regularly, they need to migrate to Linux. As far as I know, we can use postfix / qmail + LDAP + samba combine together so we can have single login and others.
BTW - this is not complex. If you really need training, Novel and others give such training and the SuSE enterprise server makes this nearly a brain dead solution. Ruben -- __________________________ Brooklyn Linux Solutions So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://fairuse.nylxs.com http://www.mrbrklyn.com - Consulting http://www.inns.net <-- Happy Clients http://www.nylxs.com - Leadership Development in Free Software http://www2.mrbrklyn.com/resources - Unpublished Archive or stories and articles from around the net http://www2.mrbrklyn.com/downtown.html - See the New Downtown Brooklyn....