Why does NGINX incorrectly determine the ip address of the server from the dns name?

Question

Nginx

There are two servers, nginx is installed on one server, plus the site les.lesok.ru is running on port 80. I want to redirect the request to another server to the second site dom.domik.ru, but for some reason, when requesting the second site, nginx determines the ip of the current server from it and, accordingly, gives incorrect data. The
config is like this

server
{
        listen 80;
        server_name dom.domik.ru;
location /
        {
                return 301 https://dom.domik.ru;
        }
}
server
{
        listen 443 ssl;
        ssl_certificate     /usr/local/nginx/conf/cert.pem;
        ssl_certificate_key /usr/local/nginx/conf/cert.key;
        server_name dom.domik.ru;
        location /
                {
                        proxy_pass http://10.*.*.50;
                        proxy_set_header Host 10.*.*.50;
                }
}

Answer 1

The proxied server needs to send the Host header if IP is used as the proxy address and the target site is not default on the proxied serverproxy_set_header Host "example.com";

Answer 2

and what. in server name it is already possible to write the protocol/scheme?
nginx.org/ru/docs/http/server_names.html
or is it some kind of regular expression? ))