HI Ago, Thanks for that, yes I guess I should have been more specific, since most of my userbase are hung up on "must have" outlook, I guess outlook integration is a plus point, as is a good web interface. AD integration is of no interest to me either way, but access to shared contacts and calendars is.... As a Micro$oft partner (cough) I have access to Exchange for very low cost, but not the enterprise version, and can install exchange with my eyes closed, but I have several VPN sites to consider and don't want to spend money on Microsoft Enterprise exchange and have all the baggage that goes with it (eg. backup software and the general bloat of M$ exchange) So in short a groupware system that can run multiple servers at remote sites (as enterprise connected exchange), has a webmail facility and doesn't need to integrate with MS AD... regards Pete Deim Ágoston wrote: >hi, > >it depends on what you want to achieve. Open-Xchange meant to be a >replacement of MSExchange just as OpenGroupware.org. Both were commercial >products and later they opened the code. Both of them have outlook >connectors (OX calls it OXtender). OpenXchange is a bit harder to >integrate with Samba3 in PDC mode. But they can perform a very good job. >You can buy commercial support also. Kolab also has an Outlook plugin to >work seamlessly with Kolab but I didn't tested it. > >bye, >Ago > > -- This message has been scanned for viruses and dangerous content, and is believed to be clean.