I have multiple subdomains. No problem making an xml-sitemap, and I know google sitemap protocol doesn't allow to include URLs from different (sub)domains in a single sitemap, so I have to setup separate instances for every subdomain and generate separate sitemaps for them.
1) Do all these sitemaps go into the public root folder? If so, what's the naming convention for them?
2)Or does each subdomain's sitemap go into the (otherwise empty) subfolder for each subdomain?