I am currently trying to build my sitemap for a multisite at http://www.greenbookpages.com
I have tried using the plugin WPMU DEV SEO and it only creates a sitemap with 1049 urls my website has over 70,000 posts over the 4 site on the multi site.
Does this plugin have limitations on website size?
Also when I try and submit my XML sitemap to google, google is saying that it consist of HTML. Any help here?