- $starttime="2012-1-1"
- $endtime="2012-1-31"
- Get-MessageTrackingLog -start $starttime -end $endtime -resultsize unlimited -eventid send| Measure-Object
http://bbs.exchangecn.com/read.php?tid-1182-page-e.html
http://technet.microsoft.com/zh-cn/library/aa997573(v=EXCHG.80).aspx
