Blacklist removal

Hi,

Norton rates the complete maastrichtuniversity.nl domain als dangerous (phishing site) .
The problem was this site http:// learningandworking . maastrichtuniversity . nl/wp-content/themes/tul4/online-rbc . php
This site has been taken down, so it cannot be checked any longer.
Norton keeps the complete domain blaclisted bacaus their analysts cannot detect anything.
maastrichtuniversity.nl  contains hundreds of servers and over 50.000 users.
So, how can I get maastrichtuniversity.nl  from the blacklist?
For now I see 3 solutions:
1 ) Nortons improves their algoritm and removal polocy
2) I am advising my users to ignore Norton's security warniongs, Bad idea, I know, but what else?)
3) Advise my users to use other security safeguards with a better blacklist policy