exchange 2010 sp1 ru3 can not delete a specific email from all user 's mail box i search the technet lib, http://technet.microsoft.com/en-us/library/dd298173.aspx, this page says exchange 2010 sp1 can use search-mailbox to delte mail, i use Get-Mailbox -ResultSize Unlimited | Search-Mailbox -SearchQuery ‘subject:”testjunkmail”’ -DeleteContent in exchnage powershell ,but EMC display + search-mailbox <<<< + CategoryInfo : ObjectNotFound: (search-mailbox:String) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException search-mail can not find in exchnage 2010 sp1 ru3,how can i delete a mail from all user 's mail box ,any alteinate cmdline? thanks .

To be able to use "Search-Mailbox" cmdlet you need to be a member of "Mailbox Search" ManagementRole or "Discovery Management" Role group.Adam Bokiniec

thanks Adam.solved