Host Header Issue with Sites on CDN

Hi All,

We are trying to use the Host Header approach in our Load Balanced environment.Site are configured on CDN also.

When we are are doing the bindings of the IIS Site with Host name present,We are getting 404 error.But if we remove the Host name or add an addtional entry having only IP woithout Host Name everything is working fine.

When we checked the Request Header info,we found that Host Header have the LB-IP as the value .

We have other machines having IIS 7.0,Everything is working fine there  and When we checked the Request Header info on site present on  those machines ,we found that Host Header have the URL as the value .

So is it possible that IIS is supressing some info on our first Machine which is causing the Host Header not to work.

If this is the case ,Is it possible to correct it?

A little help would be highly appreciable.

Thanks and regards

Gopesh88