假设获取邮箱名的指令是Get-Mailbox|?($_.user -eq $name)|%{$_.mailusername}
get-messagetrackinglog -resultsize unlimited -start “11/01/2012” -end "12/30/2012" -eventid "SUBMIT" | group-object property:sender |select name,count,@{N="mailusername";E={$name=$_.name;Get-Mailbox|?($_.user -eq $name)|%{$_.mailusername}}}