iirc, the server must be restarted for the mapping to take effect.
host-node-map is working locally with different domains; I also recently had a subdomain set up and working as you describe --but closed it; so it's no longer available to show example.
I restarted Naviserver but the redirection is broken. It still doesn't work. The subdomain is present in the address bar, but the page, which displays is Mainsite default page ( i.e. acs-subsite/www/index).
I'm a using a proxy in front of Naviserver, and I wonder if NGINX could affect it somehow.
How could I track this error down to its root cause?