The Microsoft FTP with user isolation and how to automate the setup with Powershell (with Domain Users)

The magic of FTP with user isolation, unlike a normal FTP server, is that every user
has his own directory and that user cannot touch other users' directories or change to root directory. In linux, it is similar to "chroot" option after the user has logged into his home directory, but it further needs configuring directory permissions.
Today, I will show you how to make ftp with user isolation in IIS 8.5 (also tested on server 2008R2 with IIS 7.5) with Domain user accounts in graphical Mode. Also, I have made a good powershell script to automate this ftp setup process for thousand of users ;P.

IIS Worker Process (w3wp.exe) memory usage too high in Exchange Server

w3wp.exe process is an IIS web application process to handle the client request for the application pool. Exchange server services heavily utilized w3wp process not only to handle users request from external but themselves make web service requests among Exchange server members using virtual directories (Owa, OAB & Powershell etc) and respective App pools. Unless you have not configured periodic recycling for Application Pool, you may need to do manual recycle to avoid memory leaks. Microsoft Technet states that:
Internet Information Services (IIS) application pools can be periodically recycled to avoid unstable states that can lead to application crashes, hangs, or memory leaks. By default, application pool recycling is overlapped, which means that the worker process that is to be shut down is kept running until after a new worker process is started. After a new worker process starts, new requests are passed to it. The old worker process shuts down after it finishes processing its existing requests, or after a configured time-out, whichever comes first. This way of recycling ensures uninterrupted service to clients. However, if an application in the application pool cannot run more than one instance of itself at a time, overlapping rotation can be disabled [source:Technet]

As shown in Fig-1, you can see the MsExchangePowershellFrontEndAppPool is consuming much memory which visually hits in the task manager. This  may be due memory leaks or we may need further analysis on App Pool. Anyway, we need to recycle that pool without restarting the IIS.

Figure-1: IIS Application Pool memory usage too high