http to https redirect for OWA

I'm currently running Exchange 2007 and 2013 (coexistence). Everything with that is fine other than I need to redirect internal/externalhttp://mail.domain.com/owa to https://mail.domain.com/owa.  I have tried a couple different options.

1. Setting iisstart.htm http redirect to https://mail.domain.com/owa

2. Configuring Default Web Site with the same configuration for http redirect.

When I try to that name internally I get a http 403 error.  Let me know if you need me to provide more information.

Thanks