Hi all,
I have an issue regarding mailbox moves from Exchange 2010 to Exchange 2013. I moved a mailbox and checked statistics on completion. I know that mailboxes can grow up to 30-40% on migration, but the statistics tell me much more.
There was TotalMailboxSize 923MB and BytesTransferred 2.53GB. I wonder, what's the cause. Mailbox database quota was default by 2.3 GB - so the user wasn't able to send mails anymore. What's the cause for such a size increasement?
Thanks.