Exchange Server 2010 usage monitoring

Question

Dears
   How we can monitor Exchange server 2010 usage like owa usage, mail sending, contact Adding and editing ...etc.
is exchange has tools to do that or i have to use system center if yes what version of system center is Enterprise or Standard?

Answer 1

Hi ,
Please check the below mentioned points
1.) For owa and rpc connections usage , you can make use of the mentioned script on below link.
http://mikepfeiffer.net/2011/04/determine-the-number-of-active-users-on-exchange-2010-client-access-servers-with-powershell/
2.)For tracing the total mails send and received by the individual users (i.e internal /external)you can make use of the below mentioned script 
https://gallery.technet.microsoft.com/scriptcenter/bb94b422-eb9e-4c53-a454-f7da6ddfb5d6
3.For contact adding and editing.I mean to track administrator related activities on exchange recipients ,You can make use of Exchange admin audit logging to track such kind of activities.But that will not tell you the count of total contacts that are in
exchange and it exposes only the changes which is done by administrator on the recipients available in exchange. 
http://www.msexchange.org/articles-tutorials/exchange-server-2010/compliance-policies-archiving/administrator-audit-logging-part1.html
Below is the link which will help you to get the Admin audit report via emails in HTML format.
http://mikepfeiffer.net/2010/08/administrator-audit-log-reports-in-html-format-exchange-2010-sp1/
Please feel free to reply me if anything is unclear
Thanks & Regards S.Nithyanandham