Hi, I've been looking at SUSE's OpenExchange software as a possible alternative to Microsoft Exchange. We don't have Exchange at the moment, and I'm naturally disinclined to purchase it. The requirements are quite simple - just two Outlook users sharing calendar, to-do lists and notes to begin with. The basic package will exceed our needs and leave room for expansion in the future. I would like to encourage any additional users to use the web interface if possible. The system would be "stand-alone", i.e. no incoming or outgoing mail, due to restrictions placed on us by the LEA. I would probably purchase a budget 1U server to host the system - most likely a Gigabyte system as we have had good experiences with these in the past. I am inclined to try an SATA system as a compromise between performance and cost. So, I'm really just asking for comments from those who are using OpenExchange or have tried it in the past. How easy is it to set up and maintain the system? I'm not a mail server expert, so this is important for me ;) Is installing extra utilities on the system feasible (for example, NTP and UPS monitoring software)? Our existing Linux boxes are all Debian-based, so I'd also be interested to know how things like security patches are applied and whether this is done over HTTP, HTTPS or FTP, as this we are not allowed any other outgoing connections. Thanks in advance, Tony Whitmore