We're going through a domain name change. We currently have set up https:// secure.olddomain.com for traffic. I just set up https:// secure.newdomain.com with a new cert for the domain. The new domain works fine, but I set up a website in IIS with a host header for secure.olddomain.com and told it to redirect to https:// secure.newdomain.com
However, whenever I go to https:// secure.olddomain.com it just gives me an error about the certificate, and doesn't redirect. The only cert I have installed is for the new domain on that IIS website, I don't have one set up on the redirect.
How do I get this to redirect properly?
(had to add spaces after the http:// because the site gave me a warning about posting too many "links")