@morrow without logs this will be hard to track down. can you ask your administrator to open up a support case for this?
In its report of 9 January, 451 Research analyst Jay Lyman confirms that Zarafa continues to grow its customers, partners, large enterprise deployments next to its cloud computing presence and capability.
451 Research, a division of leading global analyst and data company The 451 Group, is focused on the business of enterprise IT innovation. 451 Research analysts deployed worldwide provide critical and timely insight into the competitive dynamics of innovation in emerging technology segments.