Error
Failed to retrieve items in Sent Items folder. Error: ErrorMessageSizeExceeded Message: The message exceeds the maximum supported size.
Cause
By default, the Exchange Server has message size limits of 10MB. Although the Exchange server may accept delivery of items larger than 10MB via SMTP, MigrationWiz migrates email using EWS, which is subject to different size limits.
Resolution
For more information about message size limits on the Exchange Server review the following articles.