We have a shared mailbox, from which contacts keeps going missing periodically. the mailbox is around 40Gb in size, shared with 2-3 people, contacts having 5000+ items in them and environment is Exchange 2013 Enterprise version and Outlook 2013 , Blackberry phones being the main clients connecting to this server.
What is the best approach to take to identify the cause of whats happening? Enabling diagnostic logging : As this would render the email access slow and also will cause the mailbox to grow(mailbox is already 40Gb now), was wondering if this is the right approach.
would appreciate if anyone can kindly advise.
thanks,
