你在使用export-mailbox,import-mailbox默认情况下，你可能遇到以下错误

[PS] C:\>Export-Mailbox -Identity User --PSTFolderPath c:\PST\pst.pst

This command works fine on some of the mailboxes in the Exchange03 system. But on some of the mailboxes I am getting the following error.

Error occurred in the step: Moving messages. Failed to copy messages to t
he destination mailbox store with error:
MAPI or an unspecified service provider.
ID no: 00000000-0000-00000000, error code: -1056749164

但是如果你给administrator完全访问其他用户，导入到其他用户没有问题，但做成pst就报以上错误

get-mailbox | add-mailboxpermission -user administrator -accessright fullaccess

这样administrator就有完全的权限