Domain mapping - Subsite Broken link

Hi guys,

We setup our main MultiSite blogs as And the site blogs to be , where xxx is the blogs name. or it can even be, where yyy is a group name.

For example:> or -> or

We like to used this Domain Mapping and give to become

We have set accordingly to the instruction. But, we found out, or even are affect and become broken site.

We need advice on where has we gone wrong.