what would be the server config??

[railwaysystem]

Client config below :

"outbounds": [
    {
      "mux": {
        "concurrency": 8,
        "enabled": false
      },
      "protocol": "vmess",
      "settings": {
        "vnext": [
          {
            "address": "<some address that I can access without vpn>", // this address is like SNI/Bughost, owned by someonelse,
            "port": 80,
            "users": [
              {
                "alterId": 0,
                "encryption": "",
                "flow": "",
                "id": "46f0879c-c6ed-4182-90b7-8e8337dc8089",
                "level": 8,
                "security": "auto"
              }
            ]
          }
        ]
      },
      "streamSettings": {
        "network": "ws",
        "security": "",
        "wsSettings": {
          "headers": {
            "Host": "<service provider server host>"
          },
          "path": "/vmess"
        }
      },
      "tag": "proxy"
    },
    {
      "protocol": "freedom",
      "settings": {},
      "tag": "direct"
    },
    {
      "protocol": "blackhole",
      "settings": {
        "response": {
          "type": "http"
        }
      },
      "tag": "block"
    }
  ],

Above config is generated by free Vmess/Vless providers like https://sshstores.net.
But when I deploy my own, I am not able to use SNI/BUGHOST as address.

So what would be the server config for this type of client config???