[Exchange Server] 특정 속성이 Null 값인 사서함 Export 하기

$AllMailbox = get-mailbox -database "database name" |  where-object {($_.PrimarySmtpAddress -notlike $null)}

$AllMailbox|%{New-MailboxExportRequest -Mailbox ($_.Name) -FilePath \\exchmbx33\pst_test\$($_.PrimarySmtpAddress).pst