If your not to picky on calendar sharing and the other sharing options I can really recommend Qmailtoaster http://qmailtoaster.com/, rock solid piece of mail server with a really good web admin interface and a second to none support. Regards Per Qvindesland On 3/17/09 8:24 PM, "Robert Moskowitz" <rgm at htt-consult.com> wrote: > IPv6 support