I have manually redirected my entire site. The only page that's left is the homepage. How do I redirect my homepage to the new site (http://example.com) but keep my sitemaps on the old domain (www.example.com)? Below is the structure for the sitemap urls:

Main - http://www.example.com/sitemap.xml

Sub - http://www.example.com/sitemap-pt-post-2013-07.xml (Month and year are the only parts that change)

I have tried this and the site redirects but GWT tells me that I dont have a 301 set:

RewriteEngine on
RewriteCond %{HTTP_HOST} olddomain\.com [NC]
RewriteCond %{REQUEST_URI} ^/$
Rewriterule ^(.*)$ http://newdomain.com/ [L,R=301]

P.S.

I want to do this so that I could track the 301 in GWT and etc. until things a finalized.