After you have installed exchange 2010 with an exiting exchange 2003.. Everthing is running smooth.
but every week on a friday , you have clients who are complaning about being slow to connect to the mail, also
they get disconnected most of the time. There is No network Issue at all or DNS issue? what is IT that is casuing the issue in exchange 2010 to slow performance, connectvivty, disconnect one s a week?????