The previous part (part 3) addressed Mailbox Size but did you know that even Message Size (or rather Item size) can prevent a successful move as well?

Here’s an example move mailbox log:

As you can see in the log this mailbox there is one item with a size of 72 MegaBytes.

Let’s see this in Outlook:


It gets even worse when we open the Message:


It was addresses to several internal recipients and as you know Exchange 2010 no longer supports Single Instance Storage.