Exchange backup problem

We have this error backing up Exchange CExMAPI::SaveToMessage::SaveToMSG ERROR=MAPI_E_NOT_ENOUGH_MEMORY Detail=Not enough storage is available to complete this operation


  1. Check there is plenty of free space in the temp folder location. An Exchange mailbox backup will require at least 50% of the mailstore in the temp location as free space.
  2. Reboot the server because this might be a MAPI memory corruption issue.
  3. Check the emails shown in the error can be read by Outlook. We have seen instances where corrupt or unreadable emails have caused this error.

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