Due to historic reasons, we have things set up so that "www.mydomain.com" redirects to "store.mydomain.com".

This has worked perfectly fine until recently, when Google appears to be sending visitors to "https:// www.mydomain.com" which doesn't have an SSL-certificate (and never has). Strangely, its only the first link that goes to "https:// www.mydomain.com", all other links point correctly to "http:// store.mydomain.com".

Because there is no certificate on the "www" version, users are getting an error message.

How do I make Google revert to pointing the main link at "http:// store.mydomain.com" (or even "http:// www.mydomain.com.")

If I remove "https:// www.mydomain.com" from Google webmaster tools, will this also remove the redirected page ("http:// store.mydomain.com)?

Thanks.