@morrow without logs this will be hard to track down. can you ask your administrator to open up a support case for this?
This short movie gives you an impression of one of the 2013 Zarafa Tour editions that was held in the Netherlands. Open source engineers, developers and administrators from every level visited the event. We meet-up to learn, share and contribute to the technology that we all love. Find out more at http://zarafa.com/tour.
The Zarafa community comes together during yearly Zarafa conferences, like Zarafa Summercamp and Zarafa Tour. These are the meeting spots to exchange ideas & expereinces. And you have the opportunity to chat and to connect to other tech savvy people in the open source ecosystem.
Of course, the community meets online as well. We discuss technologies, fix issues and contribute to Zarafa code, together with Zarafians, partners and customers. Everyone is invited to join and participate. You should definitely check out the Community Forums and the Community Hub. And don't forget to introduce yourself!