May i use JetStress in a production eviroment?

WHy not, You can use jetstress of Exchange 2007 and 2010. But Jetstress testing should be performed before you install Exchange on the server. Install Jetstress http://technet.microsoft.com/en-us/library/ff459260.aspx Microsoft Exchange Server Jetstress http://technet.microsoft.com/en-us/library/bb643093(EXCHG.80).aspx

Notes have been added to run jetstress on a production enviornment. Download below http://gallery.technet.microsoft.com/Jetstress-Field-Guide-1602d64cSukh

yes agreed, you can do it on your prod systems, ensure you do it out of hours to reduce effects on end users. Like has been mentioned above really it should be performed before migrating users onto a box.Stew