The emails in an invalid format cannot be accessed by a MAPI application
- You are performing a database level backup (with the email level metadata) or a mailbox level backup or recovery operation;
- The operation completes successfully but contains messages about skipped emails:
An e-mail will be skipped during backup
The skipped emails are in an invalid format and cannot be correctly shown/accessed by a MAPI application (including Microsoft Outlook).
You can identify and check the emails by looking the product messages in the log:
An e-mail will be skipped during backup. The e-mail was sent from '<from>' to '<to>' with subject '<subject>' on '<date>'. Mailbox: '<mailbox name>'; Path: '<path>'.