Nope don't boil it at all. Like I said if you know and trust who you bought it from and you trust that they are using safe storage and clean milking areas you should be fine.

You're buying raw milk, you might as well just buy pasteurized milk rather than boil it. Pasteurization isn't even boiling it, it's bringing it up to 160° F. This kills off bacteria but also kills off any beneficial properties of the milk. Milk can be one of the most beneficial animal fats but you completely ruin it by boiling it.