only allow certain websites

[Guest]

[Peter2]

Hi,

A few days ago I installed EFW2.3 after I was searching for an extended proxy/content filter and I am thrilled about it.
I succeeded in getting most of the things I needed but there are a few things which I don't understand and I didn't find a clear answer for

1) It seems to me that the contentfilter should be something to allow/block websites but on the other hand, I saw a solution where access policies are created to block/allow sites. What is the right way to block all http requests but some exceptions?
2) I couldn't find anything concerning the configuration of e-malclients?

Thanks a lot in advance!

Peter