Greeting,

*note: the following domain name are untrue*

i have a DNN installation with a domain "a.com" that the PortalID is 0, and two domain alias "b.com" with PortalID=1 and "c.com" with PortalID=2. 

In a.com/robots.txt the sitemap are added like the following (sitemap: http://a.com/sitemap.aspx)

now i want to add sitemap to domain alias b.com (sitemap: http://b.com/sitemap.aspx) and c.com (sitemap: http://c.com/sitemap.aspx)

These domains must be set as the above in robots.txt?