Check, if a website is still reachable – over proxy connection with wget – on windows !!
Wget for Windows ist avalable here.
wget.exe -Y 1 -d -v -S -O D:\Programme\wget\index.shtml -a D:\Programme\wget\www.bahn.de.log http://www.bahn.de/p/view/index.shtml
Had to set the environment variable http_proxy=http://proxy.youdomain.somewhere:Port
The used paramters are explained here.