TestClient creation on the WCF service showing different endpoint name ,from service endpoint name

 I have created a service & created dns entry for it so that it will display hostname looks like below
http://abc/service.svc
when i browse .svc  able to see the wsdl
http://abc/service.svc?wsdl
 
I enabled SSL on the service
 
https://abc/service.svc
when i browse it it showing
https://servername/service.svc?wsdl
 
why it is showing server name instead of host header name
 
Any thoughts do i need to change any setting iis or web config.
 
Thanks.
Sandeep.
 
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