Here is a great tools to follow those txt log files that you may find on windows

The download page is: tailforwin32

Some files that could be usefull to check with tail:

c:\WINDOWS\WindowsUpdate.log

Follow this one to know, for example, if your computer is connected to a WSUS server for updates

C:\Program Files\Exchsrvr\yourservername.log\*.log

This one is useful since exchange server does not provide a useful (at least that i’m aware) way to check in real time incoming mails.